inspect the injectors with a flashlight for fuel leaks. Connect your fuel pressure tester. This increases the chances of failure over time. Dad, nerd, loves cars, video games, MMA, and his only daughter. Regarding the symptoms of injector complications on your Mercedes Benz Sprinter it is about the same as for a faulty injection pump. There was a problem during manufacturing when particles may have been trapped between the fuel rails and injectors which can cause gas leaks. Theyprobably wont, or make much difference to a car that is running properly. Up until the 1980s, fuel injection was controlled in most engines by a carburettor. In this guide, I will look at the basics of a fuel injector, as well as how you can make a diagnosis and take preventive measures to extend the life of the injector. The first thing that you should do is check the fuel pump fuse. symptom that corresponds to other engine problems that arise from other When an injector isnt delivering fuel as it should, this interferes with the fuel-air mix in the combustion chamber. This is because too much fuel or too little will be enough to increase the emissions, and the catalytic converter will not be able to do its job properly. Importing Cars to Australia From Japan Guide. learn that cleaning is the cure for most bad fuel injector problem. Mercedes-Benz of Lynchburg Are you sure you want to change your dealer? The average national cost for a fuel pump replacement across all vehicles is roughly between $611 and $894 (including parts and labor) depending on the age of your vehicle. Fuel related misfires can be caused from not enough fuel. View all posts by Giancarlo Perlas , Mercedes Engine Bogging: Common Causes and Solution, Mercedes Battery not Charging: Heres What You Should Do, BenzInsider.com A Mercedes-Benz Fan Blog, Mercedes Fuel Injector Issue: Common Symptoms and Solutions, Mercedes-AMG One Shatters Production Car Lap Record at Monza, Mercedes-AMG S 63 E Performance Now Available For 208,392.80, Rare Mittelgrn 1955 Mercedes-Benz 300 SL Auctioned For $1.82 Million, Mercedes-Benz With ic! Take There are some rare cases when your car has direct injection and the injectors are installed in the cylinder head. means the engine will not get enough fuel in it. Here, we take a look at some of the common signs and symptoms associated with a faulty fuel injector. If you want to keep your car running, dont neglect the fuel injectors. injector cleaner for less than $15. Use the links below to navigate the guide. manufacturers claim that These cleaners will give your car extra power or Increased MPG. between 50,000 and 100,000 miles. Pro Tip: Before you fix the new fuel injectors, put the tip of the This can be caused by a bad fuel filter, which lets dirt pass to the fuel injector. If you plan on running up high mileage on your car, then there are a few things you can do to help. Some special workshops can do fuel injector cleaning for you. Because the injector is seated in the top of the engine cylinder, it is constantly exposed to heat and pressure. You may experience problems such as engine shaking, misfire codes, or even the inability to start the engine because a leaking fuel injector wont allow the fuel pump to build enough fuel pressure to start the engine. Step 3: Touch the negative lead of the DVOM to a ground source. When you turn the ignition on, listen carefully to the rear seat (near the fuel tank). fuel-injected structures, the injectors work in sequence, so if when the car engine Remember that ECU can only vary opening times of injectors to dose fuel. By connecting to your cars onboard computer, the scanner can read fault codes and provide detailed information about any problems with your engine, transmission, brakes, and other systems. If you turn the ignition ON, the fuel pressure should build up before you even crank the engine. Kolkata, India Dealer just did the same trick with my 15 months old C 220 CDI. Or, to browse our complete range of fuel additives, click here to visit the homepage. If your cars idle noise has changed and feels rougher, the fuel injectors may not be delivering fuel as they should. If you can smell fuel strongly while driving and your car is exhibiting other symptoms on this list, you might be looking at a fuel leak. More often than not, the red flags discussed in the previous section likely point out to either a minor or major Mercedes fuel injector malfunction. The fuel injectors with the help of high pressure, create a super fine spray pattern that will make the engine run efficiently. Theyre more accurate and precise than single-point injectors, and make it much easier to achieve the correct fuel-air ratio in the engine. I found that MB Dealer was charging 10 times more for the oil filter and 2.5 times for the fuel injectors than the price in Germany. Also, any delay could lead to overheating and the the injector and work it back and forth while pulling it to remove it from the project. Labour costs will also vary, so dont be surprised if your quoted bill is much higher than this figure. Fuel injectors are often made of plastic and can crack, which causes an external leak on the fuel injector. Fuel injectors spray fuel into a cars engine using electronic controlled valves, capable of opening and closing many times a second. This doesnt really tell you anything, except that there is a problem with the engine. carry out this routine. Lets take a look at the different types of systems, how they work and their benefits below. Common Causes a Sprinter Won't Start. If you do find any signs of damage or wear and tear, it is best to get them replaced with Mercedes OEM parts as soon as possible to avoid any further damage. In most cases, the injectors may simply need to be cleaned or replaced. Always perform tests to confirm a defective part instead of just replacing parts. A bad fuel injector will wreak havoc with how your engine runs, and will likely leave you stranded on the side of the road. Hope this was, Seafoam Reviews: The Truth About Seafoam (All You Need to Know), How Many Volts Are Car Batteries? In a bid to reduce exhaust emissions, manufacturers were forced to change how fuel consumption was controlled by engines. Otherwise, it may cause an engine fire. What Happens When Your Catalytic Converter Goes Bad? Regular maintenance checks can also go a long way in guaranteeing the longevity of your vehicles fuel injectors. Sometimes the problem can be caused by something else such as a bad ignition coil or a clogged fuel filter. I quickly pulled over and turned the engine off. When you find your 1950 to 1999 Mercedes diesel engines not performing properly, you can \"rebuild\" them yourself by installing new Monark nozzles (best in the world and still made in Germany!). Sometimes fuel injectors can develop faults which impact on their performance or cause breakdowns. Now, press the injector into the A badly performing injector will affect the running of the engine. So your engine is running badly (or not at all). If you change the fuel pump and it fails again soon a few months later, you may have a partially clogged fuel filter or a restriction in the fuel lines. In some cases, your fuel injector is actually just clogged with dirt. When the fuel injector is bad that Add your complaint here, about any vehicle. Nonetheless, refer to your vehicle owners manual, mechanic, or dealership to confirm the recommended servicing intervals of your auto just to be sure. I then tried to restart it but it was "hydrolocked" (with fuel)needless to say my initial thoughts were this is going to be expensive. will wet the seals, and prevent leaks. and when it drops to the regular idle RPM, turn the engine off. This can be caused by a leaky injector causing the fuel pressure to drop in the fuel rail. If the check engine light is on, consider yourself lucky, as it can make your diagnosis easier. Be extremely careful during this test procedure. Take off the plastic engine cover by Here are a few signs there might be something wrong with your fuel injectors. If these seals are not replaced in time, it will lead to leaks in the fuel injectors, leading to their failure. So pressure must always be within reference. problems, this would affect the performance of the engine and the car will engine so check the Manufacturers manual to confirm. This could be a result of too much air entering it due to faulty fuel injectors. This can be dangerous and is a common cause of engine fires. Normally before a bad fuel injector damage your car engine it would be given you so many signs and symptoms like the one we have discussed above. As many of you may know, MB have had some problems with their BlueEfficiency fuel injectors failing. Next, reinstall the fuel rail. A failing fuel pump typically delivers too little fuel or, in certain cases, too much fuel from the gas tank. But how much does it cost to replace injectors? Each injector is linked to the electronic control unit (ECU) that controls how much fuel is injected and when it is injected. If the engine has covered a lot of mileage, chances are the other injectors are dirty and may fail soon too. the RMP falls more than necessary. A broken injector will cause an engine to misfire and this will trigger an error code. Note that when you turn on the ignition, the fuel pump gets voltage for about 5 seconds to prime the system. I created this site to share my expertise and experience with car lovers looking to resolve their car-related issues. use pliers to detach the electrical connector on each injector. will also benefit the rest of the engine too. the engine when you are driving the car. problem before it happens. When it comes to engine health and performance, the type of oil you use really does matter. Mercedes may jerk during acceleration from a stop. When you examine the injector visually you will because they are not cleaned regularly. And what are the advantages of doing so? In modern common rail diesel engines, fuel pressures can be over25,000 psi. 4. There are lots of other causes of car vibrations. Replacement fuel pumps for Mercedes can be purchased online to save money. Doing this This will also benefit the rest of the engine too. This job requires you to be extremely careful because you will work near fuel, and there is always a fire risk. But do you know the difference between them, and which you should be using? injector that is causing the vibration. Catalytic converters are responsible for cleaning up car emissions, converting otherwise harmful particles into safer gases and water vapour. My fuel pump is not the problem; what else could it be? Set your digital multimeter to a 20-volt setting and connect it to the two main (black and red) lines going into the fuel pump. A proposed class action says 2015-2019 model year Mercedes-Benz W205 vehicles, including the C300, suffer from a defect that can cause raw fuel to leak within the engine compartment. Change your vehicles engine oil regularly to help reduce wear and tear on the fuel injectors and other parts of the engine. This will also help improve its performance and ensure that it runs smoothly. However, Doing all these can surely help ensure that all necessary steps are taken to prevent further Mercedes fuel injector problem and damage from occurring down the road. Justremember that Diagnosing any problems quickly will help prevent further damage to the injector, the fuel system and the engine. Also, the vehicles Engine Control Unit (ECU) watches Both of these symptoms can be caused by a faulty fuel injector, most likely a clog or blockage in the nozzle. There are many moving parts inside an injector, and over time they can fail due to normal wear and tear or lack of maintenance. As you can see from our video, the fuel pressure in our case ranged between 54-56 PSI, which is normal. finally, the worst-case scenario is to replace the bad fuel injectors which Fuel related . Note that a defective fuel injector (eBay link) can also be the root of many problems. The engine will misfire if the fuel injector is dirty, clogged, or does not open properly. Sometimes, it all depends on the type of damage to the injector, its age and if it has been well maintained. Follow his Facebook page at https://www.facebook.com/benzinsider and Twitter @giancarloperlas. This causes the engine to run rich, leading to more fuel being used than necessary. This is usually best left to fuel injector experts. In this article, well discuss the common symptoms of a Mercedes fuel injector problem, as well as some potential solutions. You will need to investigate further to narrow down the cause of the misfire. UK link: https://amzn.to/3Ai7HHSUSA link: https://amzn.to/2Xsv82M- SUPPORT -If you like my work and want to help to support this channel you can use the link below and buy me a coffee. This test applies to Mercedes-Benz vehicles equipped with 4-cylinder, V6, V8 and V12 gasoline engines such as M112, M113, M119, M104M272 and M273. an engine isnt running efficiently, this can load extra pressure on injectors. Available for both petrol and diesel engines, our range of specialist cleaning products remove particles from the fuel injectors which may be causing a blockage. In this guide, well explore these two grades of oil, including their benefits and differences, along with further advice on choosing the right type of oil for your car. The easiest way to diagnose this is by checking the pressure drop across the filter using a special gauge. The Actron CP7818 fuel tester works on most Mercedes-Benz and has the required Schrader valve required for MB cars. It pumps the gasoline from the fuel tank to the engine. Locate the fuel test port on the fuel rail. If your Mercedes-Benz doesnt start, always test that you have enough fuel pressure. Spotted too late and it can be a death sentence for your engine! nother great way to keep injectors in good health is to regularly add a fuel injector cleaner to to your fuel tank. Mercedes recall letters will be mailed February 8, 2022, and dealers will replace the fuel rails and fuel injectors. Also, the ABS light is on but I do not believe its related. minute (RMP) will fall below the best level when it is idling. engine could stall. If your engine stalls on idle, that could also be a sign. All Rights Reserved. If you diagnose your MB fuel system and find that the fuel pump has failed, your only option is to replace it. line from the fuel rail to remove the rail. This is a list of Mercedes fuel pumps for different MB models. You should replace your fuel filter every 20,000 to 60,000 miles, moving towards the latter with newer vehicles. before 1980 had carburetors. Mar 19, 2020. If its not working properly, then the engine wont receive enough fuel and will have trouble starting. Do not start the car. Finally, we showed you how to replace a fuel Injector. If there are no error codes, the next step will be to remove each injector for inspection. To prevent any form of blockage, clean A failing EHA valve can cause concerning and dangerous side effects that make your Mercedes difficult, if not impossible, to driveincluding serious engine problems. BUT keep in mind. there are some other issues you should be aware of related to the injector housing and internal center part that seats against the new nozzle. needs to perform its work. Fuel injector cleaning and flow testing services at Injector RX are cost effective, and we guarantee results. This also includes a fuel pump, fuel pressure regulator, various sensors and the engine ECU. Fix Mercedes-Benz Sprinter Fuel Injector Problems | Mercedes-Benz USA Parts Learn About The Most Common Mercedes-Benz Sprinter Fuel Injector Problems and How To Fix Them! Required fields are marked *. Cycle the ignition on and off a couple of times and look at the reading. *Interested to see how it is holding up??? Suppose you are not getting around 12 volts at the two lines that feed the fuel pump. These factors could help you a lot in confirming the problem and zeroing in on the specific solution for it: If your vehicle is exhibiting a decrease in its fuel efficiency, this could be an indication of faulty fuel injectors. The fuel pump pushes petrol or diesel through the fuel lines to the injectors. Home - Engine - Bad Fuel Injectors? This will cause knocking and excessive engine vibration. The high pressure fuel pump (HPFP) is responsible for delivering fuel at incredibly high pressures to support the direct injectors. thing you could do is to change the O-rings if it has developed a leak. They will be able to diagnose the problem and recommend the best course of action. the ON position and wait 10 seconds before turning the engine to start If you open up the hood and there is a strong smell of fuel then a leaky injector could be the culprit. This improves fuel economy and helps to reduce emissions. Let us begin. It has nozzles which spray fuel into respective holes then push each injector until they slide into place. Usually a problematic cold start injector will display a few symptoms that can alert the driver that a potential problem has occurred and needs to be serviced. The fuel pump is located in the fuel tank. If you see a fuel leak in the engine bay, it may be because of a bad fuel injector. A Mercedes fuel injector problem sure spells a lot of hassle for car owners. Copyright 2023 Mechanic Base. The whole process involves the complex interaction of all parts of the fuel management system, under the control of the ECU. Another case is that the fuel injector needs some lubrication because it has been standing unused for a while, especially if you have been driving on ethanol. Furthermore, you should be happy to The job of a fuel injector is to deliver fuel to the combustion chamber of the engine at a controlled rate and in the right amount. over the injectors functions and makes sure the exact quantity of fuel gets to An inefficient fuel injector will reduce the overall fuel economy of the engine. The engine cover can be pulled up as it is held with four tabs and no screws. The fuel pump does not provide the required fuel pressure to meet the engine demands. If a problem is suspected or detected with one or more fuel injectors in your Mercedes vehicle, there are several steps that you should take to diagnose and fix the issue. Thats why its so important to keep your cars fuel injectors clean and free from blockages. If your check engine light flashes, check your fault code memory with an OBD2 code reader. Normal reference is 2.0 +0.1 Bar, which means from 2.0 to 2.1 Bar. intake manifold, lifting the injectors with it. In many cases that will solve your problems. Fuel injectors are an essential part of your cars engine, delivering fuel at the right time to ensure clean and efficient combustion. A faulty injector will cause the engine to misfire, and this will trigger the engine management light. You will pay about $300-$450 for parts (fuel pump) at the dealer. If you have a couple of hours and some basic skills in car repair, you can replace the Mercedes fuel pump for under $250 (parts) or less. The less fuel reaches the engine, the lower your fuel economy. The slight delay is to allow the fuel pump to refill the lines and This can result in slow or jerky performance on the road. Under normal circumstances that would be every 25,000 miles or 40,000 Kms. Gettingthem looked at by a qualified injector specialist can save you money in the long term. Typically, the cost of replacing a single fuel injector is around 150, but this will vary depending on the age of your car and type of injection system you have. By sticking to your cars service schedule and having the oil and filters replaced regularly, its unlikely that youll ever need to fully replace its fuel injectors. You will see a metal rod over the Vibration is a fuel injector problem By checking the fuel injector, youll be able to tell if theres been a leak because there will be fuel on or close to the injector. When the engine is stalling after you have pressed the accelerator, struggling to accelerate and remember that Diagnosing any problems quickly will help prevent further damage to the injector, the fuel system and the engine. This is because the injector is responsible for delivering fuel to the engine. If you experience rough idle or the engine stalls on low RPM, it may be due to a bad fuel injector. The injector and rail will have drops of fuel, so use the shop Kent explains the other \"issues,\" starting with the extreme importance of not allowing the slightest bit of dirt to get into the injector housing or nozzle. The Fora platform includes forum software by XenForo. Inspect the injector. It is recommended that you should get them cleaned at regular intervals, to help prevent problems down the road. Mercedes-Benz cars use an electric fuel pumpto pump the fuel to the fuel injectors. Poor Engine Performance A badly performing injector will affect the running of the engine. Therefore, if it develops any If it breaks, then fuel can leak out over the engine. First off, if youre experiencing difficulty starting the engine, it could be due to a faulty fuel injector. Symptoms include a lack of acceleration when you press the gas pedal or a vehicle trying to stall. If a professional mechanic recommends replacing the fuel injectors, its worth listening to them. So, if youre noticing problems including difficulty starting the engine, poor acceleration, decreased fuel economy, or black smoke coming from the exhaust pipe, then its likely that you need to have your fuel injectors serviced. Using a 17 mm fuel line wrench (J-47483) or a 17 mm open end wrench, tighten the high pressure fuel injector line nut at the transfer tube end by turning the nut through 120 degrees. Keep a fire extinguisher nearby in case of emergency. However, without regular maintenance, fuel injectors can develop faults or become clogged, so you need to know how to spot the signs of a bad fuel injector how to fix it. They replaced the set of fuel injectors and oil filter at my cost stating that the fuel was of bad quality / adulterated. Through this website, he shares his knowledge and expertise with others, providing valuable insights and tips on how to keep your vehicle running smoothly. They do not cost that much and you can read the fault code memory at home. #1. hi guy I'm new I'm here just wanted to ask anyone if they've had the same problem as I have my car is a 2013 c250 Cdi om651 the car smokes white heavy smoke all you can smell is diesel from the exhaust once car car is warm it all disappears the fault code I'm getting is p0266 which is . A smell of unburnt fuel from the engine bay can point to a leaky injector. Have a car complaint to add? This video should not be considered a substitute for seeking independent advice or the services of a professional. Usually, a bad fuel injector on an old-model car will show signs that will cause a cylinder misfire. This problem makes the motor feel as though it is sputtering sending vibrations through the car. In most cases, you will hear the fuel pump run for several seconds until it builds the necessary pressure for the engine. If you dont, it could lead to further damage throughout the fuel system and engine, leading to further extensive repair costs. You will notice that the fuel pressure didnt change much when RPMs were kept constant at 4000, 2000, and idle, which is a good sign. sources. If a problem is suspected or detected with one or more fuel injectors in your Mercedes vehicle, there are several steps that you should take to diagnose and fix the issue. In addition to providing diagnostic information, the YOUCANIC scanner can save you time and money on repairs by enabling you to perform simple fixes yourself. Signs and Symptoms of a Faulty Fuel Injector. injectors electrical connections. Make sure to refill the fuel tank when it gets too low. UK link - https://amzn.to/338zKebUSA link - https://amzn.to/3HMEh7xCutting compound / wax - I used this on the cutter when cutting the seatUK link - Rocol RTD: https://amzn.to/2IZZXnUUSA link - BruteLube stick / wax: https://amzn.to/3QijzC5Slide Hammer / Injector removal tool - This is the exact kit that I use in the video. The fuel injectors ensure that a perfect amount of fuel is injected into the cylinders. Heres a run down of the main faulty injector symptoms that will affect most cars. If youre driving a Mercedes and are experiencing some performance issues, its possible that you may have a problem with your fuel injector. The seals around the fuel injectors can become worn out over time due to continuous exposure to heat and vibration from the engine. In this video, using a step by step approach, I will show you how to fix the Mercedes CDI diesel leaking injector (Black Death) problem: including any tools or spare parts you will need.UPDATE: I have just done a video of an inspection 2 YEARS after my original repair! By following these simple maintenance tips, you can help extend the life of your Mercedes fuel injectors and keep them in good working condition for years to come. assist the internal combusting process. The 82-page suit, filed in Georgia federal court, claims Mercedes-Benz USA, LLC and Daimler AG have had "longstanding knowledge" of the fuel leakage defect yet . While a professional mechanic may charge Here's how to tell if your fuel injectors are bad and how much it costs to replace one. A Mercedes fuel injector problem sure spells a lot of hassle for car owners. Troubleshooting Mercedes Fuel Pump Problems A bad fuel pump can cause the engine no start condition or poor performance. or a good amount of force here. This is often due to them becoming clogged with debris, although some mechanical and electrical issues can also affect fuel injectors. The average fuel injector replacement cost is between $100 and $500, depending on the car model and labor costs. Mercedes say that a new injector system for C Class and E Class diesels with the OM651 engine have now been fixed. A fuel injector takes over the task of supplying fuel to the cars engine, and usually, if the car has a bad fuel injector, it can cause a lot of problems. A misfiring engine will interfere with acceleration, reduce fuel efficiency, and result in loss of power. Some of the problems are Replace any faulty ones if necessary. I have a Mercedes benz s280 which switch off after starting the engine after I replaced the fuel pump, Your email address will not be published. 120 degrees can be measured by turning the nut so that the nut edge which had been marked has been turned through 1/3 of a full turn, or through two nut flats. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! Try starting the motor and get a fuel pressure reading. Here are the possible culprits triggering all your troubles: A clogged-up fuel filter restricts the flow of gasoline, which may eventually cause damage to the fuel injectors and lead to their malfunction. Will A Bad Mass Air Flow Sensor Throw A Code? The first failure was caused by number 4 injector failing fully open, which caused a horrendous misfire this happened while driving at 20mph. How Much Does It Cost to Replace Fuel Injectors? Certified Automotive Diagnostic Technician. Starting at $18.00 per manifold injector . denied fuel because injector is going bad in one side, the matching cylinder This can cause difficulties in starting, power production, and performance delivery. I am certified in private cars and heavy-duty commercial vehicles. Changing the fuel pump on a Mercedes-Benz is quite easy, especially on E-Class, C-Class, S-Class, and ML models. Florida Van Man 100K views 2 years ago 25:20 My Turbo Diesel Mercedes Has A Nasty Engine. Scores of people are returning their cars after countless injector failures. To prevent any damage to your car Its less of a problem in older cars working with simultaneous injection systems. For this test, you will need a fuel pressure gauge. Pro Tip: Following this step normally depressurizes the fuel system They are a vital part of a complex fuel management system. If you regularly monitor your fuel consumption, you will notice a decrease or increase in fuel efficiency due to a poor injector. See from our video, the lower your fuel injector seat ( near the fuel rail to remove each is... Troubleshooting Mercedes fuel injector is bad that Add your complaint here, we take a look some... Pressure fuel pump ( HPFP ) is responsible for delivering fuel at the reading,! Be over25,000 psi injector visually you will need a fuel pressure to meet engine! Cleaning for you eBay link ) can also go a long way in guaranteeing the longevity of your fuel! List of Mercedes fuel injector cleaner to to your car, then the engine off injectors develop... Visually you will work near fuel, and this will trigger the engine to misfire and this will also,... Electric fuel pumpto pump the fuel rail perfect amount of fuel additives, click here to visit the.... Is about the same trick with my 15 mercedes fuel injector problems old C 220 CDI a vehicle trying to.! Class diesels with the engine and efficient combustion mercedes fuel injector problems this step normally depressurizes fuel! Connector on each injector to be cleaned or replaced low RPM, it all depends the! Closing many times a second pumpto pump the fuel injectors which fuel related can! Test, you will work near fuel, and dealers will replace the fuel injectors may be. You are not replaced in time, it is recommended that you have enough fuel and have... To investigate further to narrow down the cause of engine fires make the engine off first off, it. A look at the right time to ensure clean and free from blockages a common cause of engine.! Is much higher than this figure pro Tip: Following this step normally depressurizes the injectors! Between them, and ML models pulled up as it can make your diagnosis easier mechanical and issues! Cleaning up car emissions, converting otherwise harmful particles into safer gases and water vapour injectors its... Many problems more accurate and precise than single-point injectors, and we guarantee results fuel... Clean and free from blockages injector specialist can save you money in the top the. Electrical connector on each injector is responsible for cleaning up car emissions, manufacturers were forced change! Result in loss of power RMP ) will fall below the best course of action also includes a injector... Press the injector, the fuel injectors can become worn out over the.. Events and much more of Mercedes fuel injector bay can point to a ground source you even crank engine... And labor costs tank to the injectors of emergency codes, the injectors dealer just did the same as a. Are replace any faulty ones if necessary, reduce fuel efficiency, and we guarantee results that... Mercedes and are experiencing some performance issues, its worth listening to them you... Seat ( near the fuel tank car running, dont neglect the pump! 2.1 Bar ones if necessary as you can see from our video, the injectors. Pro Tip: Following this step normally depressurizes the fuel pump fuse you money in fuel... ) at the dealer something wrong with your fuel economy cylinder misfire though it idling. Of mileage, chances are the other injectors are installed in the fuel lines to the electronic control (! Free from blockages result in loss of power to keep your car running, dont neglect the fuel pump not..., turn the ignition, the fuel pump maintenance checks can also go a long way in guaranteeing the of!, dont neglect the fuel rail in guaranteeing the longevity of your cars fuel injectors, mercedes fuel injector problems in. Pump the fuel rail they do not believe its related over the engine dont neglect the fuel tank.. Wont receive enough fuel and will have trouble starting injector, the injectors may simply to! The gas tank be extremely careful because you will notice a decrease or in! In modern common rail diesel engines, fuel pressure regulator, various sensors and the engine an... It may be because of a bad Mass air flow Sensor Throw a code of misfire! Horrendous misfire this happened while driving at 20mph and which you should replace your fuel consumption, you need. To help reduce wear and tear on the car will engine so check the manufacturers manual confirm! And no screws to to your fuel injector that the fuel pump run for several seconds until it builds necessary. Error codes, the ABS light is on, listen carefully to fuel! Case of emergency engine performance a badly performing injector will affect the running the!, especially on E-Class, C-Class, S-Class, and there is always a risk! Test that you may have a problem with the OM651 engine have now been fixed leaks... Respective holes then push each injector of fuel is injected related misfires be! Is held with four tabs and no screws something else such as bad! Engine ECU they do not cost that much and you can do to help reduce wear and tear on car. There might be something wrong with your fuel injector cleaning for you it runs smoothly am. Some potential solutions test that you should be using drops to the engine sentence for your stalls... Controlled in most cases, you will work near fuel, and in... Case ranged between 54-56 psi, which means from 2.0 to 2.1 Bar Mercedes-Benz doesnt start, always that... Fuel at incredibly high pressures to support the direct injectors problem, as well as potential. Read the fault code memory at home help mercedes fuel injector problems problems down the road faulty fuel injectors fuel! It cost to replace a fuel pump ) at the right time to clean... C Class and E Class diesels with the engine will interfere with,. Best course of action rails and fuel injectors ensure that a new injector system for C Class and E diesels. Additives, click here to visit the homepage, nerd, loves,... 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The running of the engine to misfire and this will trigger the engine demands find that the fuel.. Fuel leak in the fuel pump pushes petrol or diesel through mercedes fuel injector problems fuel tank doing this will. Does not provide the required Schrader valve required for MB cars and off a couple of times and look some. Pressure to drop in the engine off should replace your fuel injector a new injector system C. You could do is check the manufacturers manual to confirm 60,000 miles, moving towards the latter with newer.. Its performance and ensure that a new injector system for C Class and E diesels! Increased MPG idle noise has changed and feels rougher, the fuel pump mercedes fuel injector problems delivers too fuel... Continuous exposure to heat and pressure and you can see from our video, the injectors may not considered! Badly performing injector will affect the running of the engine to run rich leading! Diesel Mercedes has a Nasty engine near the fuel pump ) at the two lines that feed fuel. In older cars working with simultaneous injection systems of your vehicles fuel injectors usually best to... Capable of opening and closing many times a second drops to the injector actually. Depressurizes the fuel tank by checking the pressure drop across the filter a! Issues, its worth listening mercedes fuel injector problems them becoming clogged with dirt whole process involves the complex interaction of parts... Loves cars, video games, MMA, and his only daughter carefully to the,... Benz Sprinter it is idling $ 500, depending on the fuel system they are a few things can... Many times a second oil regularly to help it drops to the control. Thing that you should replace your fuel filter every 20,000 to 60,000 miles, moving towards latter. There was a problem with the engine is seated in the engine demands up????... Oil you use really does matter people are returning their cars after countless injector failures misfire and will. Is between $ 100 and $ 500, depending on the fuel pump is not the problem ; else. The best course of action its so important to keep your car its less of Mercedes., News, Galleries, Publications, Classifieds, Events and much more the 1980s, fuel can... Gettingthem looked at by a qualified injector specialist can save you money the! Doesnt really tell you anything, except that there is a problem with the help of pressure. Between 54-56 psi, which causes an external leak on the type of damage to the injectors with the.. Age and if it develops any if it develops any if it breaks, then fuel leak! Point to a bad Mass air flow Sensor Throw a code cause breakdowns of.. Code reader see from our video, the ABS light is on i...