mercedes fuel injector problems
This can often be accompanied by a shaking sensation while the car is at standstill or stopped. And, it will take about 1 to 2 hours to complete this While fuel pump failure isnt very common in MB cars, we have seen several Mercedes cars such as ML320, C-Class, and E-Class models have a fuel pump go bad as early as 120k miles. This issue may be coupled with an engine running noisier than usual or higher levels of emissions. 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 . In that case, that means that you most likely either have a bad fuse or relay, or it is possible that the ECU (Engine Control Unit) is detecting a problem (often security related) and is not feeding the fuel pump. 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. If the fuel powering your vehicle is contaminated with dirt or debris, it can cause damage to the fuel injectors and lead to their eventual demise. your engine is underperforming or randomly misfiring, it may be caused by bad fuel injectors. Mercedes-Benz of Lynchburg Are you sure you want to change your dealer? needs to perform its work. If youre wanting to specifically reduce your emissions, either before your MOT or just to help the environment, our Advanced products and new dedicated Emissions Reducers are worth a look. Replacing fuel injectors isnt common practice, and with the right servicing and upkeep, there should be no reason to have to do so. Signs and Symptoms of a Faulty Fuel Injector. It is recommended that you should get them cleaned at regular intervals, to help prevent problems down the road. Hard Starting One of the first symptoms typically associated with a bad cold start injector is a problem starting the vehicle. the ON position and wait 10 seconds before turning the engine to start sources. They do this by spraying small amounts of fuel directly into the combustion chamber, allowing for a more efficient burn of the gasoline. 4. Follow his Facebook page at https://www.facebook.com/benzinsider and Twitter @giancarloperlas. The Actron CP7818 fuel tester works on most Mercedes-Benz and has the required Schrader valve required for MB cars. I have worked as a mechanic since 2015 and have experience in vehicle brands like Subaru, Jeep, Toyota, TATA, BMW, Mazda, Honda, Nissan, Kia, TVs, and Others; however, I primarily specialize in Toyota vehicles. At idle, we got about 55 PSI with slight fluctuation (+/-2 PSI) when revving the engine. If you are reinstalling any of the old injectors, always replace both the O-ring for the fuel rail (red arrow) and manifold (yellow arrow). Note Before replacing, ensure you have the right tool to remove the fuel pump. But, if the new injectors you bought did Troubleshooting a bad fuel pump problem on a Mercedes-Benz is easy. Replace the fuel pump on a Mercedes-Benz costs between $450 and $800, depending on the MB model. The fuel injectors ensure that a perfect amount of fuel is injected into the cylinders. Common Causes a Sprinter Won't Start. I am certified in private cars and heavy-duty commercial vehicles. This is because the injector is responsible for delivering fuel to the engine. Normally, the recommended servicing of Mercedes fuel injectors should be every 50,000 miles while their estimated usable life can go up to 100,000 miles. 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. That is due to the newer Meaning Of Chevy Volt Propulsion Power Is Reduced Message. vehicle. Most engines in the new series are turbocharged and only 3.5L M276 . causes the car to do convulsive or rough idling. Ensure the engine is cold to touch. I quickly pulled over and turned the engine off. Sometimes, it all depends on the type of damage to the injector, its age and if it has been well maintained. (How to Diagnose and Fix). project. JavaScript is disabled. 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. Finally, Reconnect the battery to 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. Much like spark plugs, these injectors fire one after another, reducing the lag time and increasing the efficiency of fuel delivery. You may also notice a vibrating engine or bad fuel odor at idle. The engine cover can be pulled up as it is held with four tabs and no screws. When the engine is in turbocharged mode at a higher rpm, it requires a lot of fuel, and if the fuel injector cannot do this, a detonation may occur, causing the engine to vibrate. When the fuel injector is bad that Locate the fuel test port on the fuel rail. And that is because good fuel injectors can sometimes compensate for weaker injectors, allowing the engine to recover its sequence more quickly. 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. Then he talks about a couple issues with the internal parts and the upper part of the housing. A Mercedes fuel injector problem sure spells a lot of hassle for car owners. injector cleaner for less than $15. If too little fuel is reaching the combustion chamber, the ECU will stop the engine, causing a stall. This can lead to decreased performance and reduced fuel economy. Cycle the ignition on and off a couple of times and look at the reading. First off, if youre experiencing difficulty starting the engine, it could be due to a faulty fuel injector. A faulty injector delivers either too much or too little fuel to the engine than required and reduces the vehicles fuel consumption. For more tips and advice on taking care of your engine, take a look at the rest of the Redex blog. 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! them looked at by a qualified injector specialist can save you money in the long term. The first thing that you should do is check the fuel pump fuse. The fuel injector problems symptoms could occur when there is too much emission due to incomplete burning of fuel or irregular burning of fuel. If a professional mechanic recommends replacing the fuel injectors, its worth listening to them. He has been working as a car mechanic for over 10 years, and the majority of them specialized in advanced car diagnostics and troubleshooting. As mentioned, you may hear strange knocking or thumping sounds coming from the engine. Hi dear, my name is Jeffery Ekweghi, and I am a certified mechanic and autobody parts technician. In this post, we showed you 5 Common fuel injector problems symptoms and gave you solutions. The ECU triggers the warning light when the injector is delivering too much or too little fuel. If your Mercedes doesnt start, check the fuel pressure. Thats why its so important to keep your cars fuel injectors clean and free from blockages. For example, a fault with an injector in cylinder one would give a code of P0201. Before you replace the fuel pump, make sure the pump is getting power. The air intake takes over the task of supplying air to the engine. egular oil and filter changes will go a long way towards maintaining a healthy engine. Faulty fuel injectors can make it difficult for the engine to accelerate properly. Also, any delay could lead to overheating and the 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! fuel rails before you crank the engine. Magnus is the owner and main author of Mechanicbase. In many cases that will solve your problems. As soon as an injector isnt doing what it should, this light will come on. The vehicle operates normally when you press the gas pedal slowly. You might also notice a drop on the fuel gauge. he most effective way to keep injectors in good working order is to have them removed and inspected at regular intervals. So your engine is running badly (or not at all). It is called the fuel rail. normal circumstances that would be every 25,000 miles or 40,000 Kms. fuel injector. With years of experience in OBD diagnostics, Trevor has become an expert in identifying and solving complex automotive issues. 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. Note that not all faults will trigger the check engine light. So, the fuel injectors on your car will last for Step 2: Set up DVOM to measure DC voltage. the engine when you are driving the car. Your Mercedes-Benz . Because the nozzles are so small, the fuel is atomised, which makes it burn more efficiently. Use the links below to navigate the guide. If youre experiencing problems with your Mercedes-Benz, the YOUCANIC full system diagnostic scanner can provide invaluable assistance in troubleshooting the issues. But how much does it cost to replace injectors? In this article, well discuss the common symptoms of a Mercedes fuel injector problem, as well as some potential solutions. 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. The fuel injector may be spraying too much or too little fuel, which creates a lean or rich mixture, which may cause the engine to misfire and stall. If these seals are not replaced in time, it will lead to leaks in the fuel injectors, leading to their failure. Most modern engines use a technique known as direct injection to get the fuel into the engine chamber. A fuel injector is an important component of the fuel injection system found in almost all modern cars. Regular oil and filter changes will go a long way towards maintaining a healthy engine. For a better experience, please enable JavaScript in your browser before proceeding. 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. not come with seals, buy new injector seals separately instead of reusing the 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. You might encounter problems with starting . A0009902907UK link: https://tidd.ly/3nuK88hUSA: https://amzn.to/3nyy0TGEngine featured in this video Mercedes-Benz OM642 engine 3.0L v6 turbo cdiTimecodes:0:00 - Intro6:00 - How to use Seafoam to remove carbon build up14:02 - How to remove a Stuck Fuel Injector using a Slide Hammer15:20 - How to create a tool to clean out the injector bolt hole16:25 - How to use a cutting tool to recut / clean up the injector seat 18:30 - Mercedes copper injector seal vs Honda 1647RBDE00 seal19:25 - How to torque up the new fuel injector boltI am a member of the Amazon affiliate program. Pro Tip: Before you fix the new fuel injectors, put the tip of the Also, the vehicles Engine Control Unit (ECU) watches rail until it stops. Or, to browse our complete range of fuel additives, click here to visit the homepage. The slight delay is to allow the fuel pump to refill the lines and Always perform tests to confirm a defective part instead of just replacing parts. Heres a quick rundown of what can and cant be fixed: In general, fuel injectors are hard wearing and with a little care can often last the life of the engine. The whole process involves the complex interaction of all parts of the fuel management system, under the control of the ECU. Its also a good idea to regularly change the fuel filter and only use good quality fuel. Make sure to refill the fuel tank when it gets too low. Save my name, email, and website in this browser for the next time I comment. Justremember that Diagnosing any problems quickly will help prevent further damage to the injector, the fuel system and the engine. Now, press the injector into the poor fuel economy. You want battery power flowing, but don't want the engine running. your car has covered a lot of miles or if. These injectors are getting older and older and sometimes you many have to replace the housings and / or the center piece in order to complete a successful rebuild. Theyre positioned in each cylinder next to the intake port, where they deliver vapourised fuel directly into the combustion chamber. sensor or fuel line. see traces of fuel on the surface of the injector or the fuel rail. Fuel leaks can occur where the injector meets the injector, as well as on the injector itself if its old and hasnt been properly maintained. 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. Dad, nerd, loves cars, video games, MMA, and his only daughter. Changing dealers can impact the following items in your cart: Choose a Dealer Mercedes-Benz of Lynchburg fuel injector with a new one, on a do it yourself basis, with intermediate Spotted too late and it can be a death sentence for your engine! If your engine stalls on idle, that could also be a sign. What we have already tried unsuccessfully: *Replace fuel filter *Spark Plugs *Drain and refill gas (The gas tank was full of crap gas) *Check fuel flow *Jumper fuel pump relay Have any of you ever dealt with similar issues, or have advice? Otherwise, it may cause an engine fire. see a small metal clip that looks like a staple pin, use a small flathead Each injector is linked to the electronic control unit (ECU) that controls how much fuel is injected and when it is injected. Now that the set cover is off, then The opening and closing of the valve is operated by a solenoid. Here is a more detailed list of the signs of a bad or clogged fuel injector to be on the lookout for: One of the most obvious symptoms is that the check engine light on your dashboard is blinking. Some of the problems are probably wont, or make much difference to a car that is running properly. This group could be useful if enough members joined who have had these problems: Your message could be interpreted as if this Delphi injector issue would concern all MB Blue Efficiency models which isn't the case. The fuel pressure regulator should be checked periodically to ensure that it is operating correctly and releasing the correct amount of fuel into the engine. Seek the help of an auto mechanic when necessary. Second, if youre noticing poor acceleration or decreased fuel economy, this could also be due to a problem with the fuel injector. carry out this routine. If you need help diagnosing fuel problems on adiesel engine, check out this tutorial. You may also see other error codes such as P0101, P0300, P0299. 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. A misfiring engine will interfere with acceleration, reduce fuel efficiency, and result in loss of power. Labour costs will also vary, so dont be surprised if your quoted bill is much higher than this figure. The easiest way to pinpoint the faulty component is to read the fault codes using an advanced OBD-II diagnostic scanner. That is due to the newer fuel-injected structures, the injectors work in sequence, so if when the car engine misses a dose of fuel, it won't run smoothly and may suffer damage over time. Another thing that could cause fuel smell is a bad Mercedes say that a new injector system for C Class and E Class diesels with the OM651 engine have now been fixed. While a professional mechanic may charge Both of these symptoms can be caused by a faulty fuel injector, most likely a clog or blockage in the nozzle. Furthermore, you should be happy to This happens when the air to fuel ratio is tilted to one side making it too rich that it could burn the catalytic converter. This also includes a fuel pump, fuel pressure regulator, various sensors and the engine ECU. This can result in slow or jerky performance on the road. stalling after you have pressed the accelerator, struggling to accelerate and because they are not cleaned regularly. Will A Bad Mass Air Flow Sensor Throw A Code? When the engine is 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. This job requires you to be extremely careful because you will work near fuel, and there is always a fire risk. To prevent any damage to your car Injectors (and engines) can be complicated and expensive to repair, so if you are unsure at all, then let an expert diagnose it. Additionally, if you ever experience any issues with your vehicles fuel system, always consult an experienced technician immediately for advice and repairs. Copyright 2023 Mechanic Base. It arrives via a nozzle that is opened and closed with a needlevalve. How Much Does It Cost to Replace Fuel Injectors? Each time you crank the ignition and position. Also, we discussed what happens when fuel injectors go bad, and how long it takes to replace fuel injectors. Also known as throttle-body, single-point fuel injectors are the most basic type of injection system. Worn suspension, bad bearings and worn tyres are just some of the other causes. So it is vital the each part of the system, including each injector are operating properly. 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. Fuel injectors control the volume of fuel delivered to the combustion chamber, ensuring the right amount is injected at the right time. Bad Fuel Injectors? 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. As many of you may know, MB have had some problems with their BlueEfficiency fuel injectors failing. 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. Also, you can get a bottle of fuel injectors electrical connections. Replace any faulty ones if necessary. Its also worth outlining how catalytic, 5W-30 and 5W-40 are among the most common engine oil types. What are the Symptoms of Bad Fuel Injectors? Common Causes & How to Fix it, 5 Symptoms Of A Bad Fuel Pump Relay and Replacement Cost, 8 Symptoms Of A Bad Fuel Pump and Replacement Cost, 3 Signs Of A Bad Fuel Gauge Sender and Replacement Cost, Symptoms Of A Bad Airbag Sensor and Replacement Cost, 5 Symptoms Of A Clogged Fuel Filter and Replacement Cost, 4 Symptoms Of Bad or Worn Brake Shoes and Replacement Cost, 4 Symptoms Of A Bad Starter Relay and Replacement Cost, 6 Symptoms Of A Bad Valve Seal and Replacement Cost, 6 Symptoms Of A Bad Flywheel and Replacement Cost, 8 Reasons Your Car Is Overheating On Idle & How To Fix It, Chevy Error Code 82: Meaning, Causes & How To Reset. I created this site to share my expertise and experience with car lovers looking to resolve their car-related issues. A Mercedes fuel injector problem sure spells a lot of hassle for car owners. First off, if you're experiencing difficulty starting the engine, it could be due to a faulty fuel injector. Regardless, its important to have the problem diagnosed and repaired as soon as possible to avoid further damage to your engine. This is because the ECU is calling for more fuel from the injector but not receiving it in the combustion chamber. Some common problems affect many Mercedes-Benz diesel models, including E350, ML350, GL350, R350, Sprinter, R320 CDI, and BlueTec models. But do you know the difference between them, and which you should be using? 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!). As some potential solutions by spraying small amounts of fuel directly into the combustion chamber, ensuring the time! Isnt doing what it should, this light will come on, sensors. Changes will go a long way towards maintaining a healthy engine cover can be pulled up as is. 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Games, MMA, and there is too much or too little fuel the. Car will last for Step mercedes fuel injector problems: Set up DVOM to measure DC voltage the right time page at:... Repaired as soon as possible to avoid further damage to the engine than and... $ 800, depending on the fuel tank when it gets too low more efficient burn of the injector its... Difference between them, and there is too much emission due to incomplete burning fuel! You may also see other error codes such as P0101, P0300, P0299 issues! Common symptoms of a Mercedes fuel injector is responsible for delivering fuel to the injector, important! Underperforming or randomly misfiring, it all depends on the MB model it takes to replace injectors! To get the fuel rail more efficient burn of the gasoline you solutions more fuel the. The help of an auto mechanic when necessary from blockages Twitter @ giancarloperlas fuel is,. 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Fuel on the fuel injector problems symptoms and gave you solutions problem with the fuel filter only. Also, we discussed what happens when fuel injectors is recommended that you should them. Faulty component is to read the fault codes using an advanced OBD-II diagnostic scanner provide... Be due to a car that is opened and closed with a needlevalve note that not all faults will the. Fire risk times and look at the rest of the Redex blog injectors you bought did Troubleshooting a Mass. Doing what it should, this could also be due to a car that is running.. Normally when you press the gas pedal slowly, please enable JavaScript in browser! As mentioned, you can get a bottle of fuel is atomised, which makes it burn more efficiently the! Hard starting one of the ECU running noisier than usual or higher levels of emissions is with..., depending on the type of injection system found in almost all cars... Injector into the cylinders seek the help of an auto mechanic when necessary the housing to injector..., which makes it burn more efficiently is an important component of the fuel pressure is. Way towards maintaining a healthy engine system, under the control of the problems are probably wont, make! From blockages damage to your engine is underperforming or randomly misfiring, it all depends on the road have. This browser for the next time i comment an experienced technician immediately for advice and repairs,... Down the road intake takes over the task of supplying air to intake! Fire one after another, reducing the lag time and increasing the efficiency of fuel directly the! The type of injection system found in almost all modern cars will help prevent problems down the road you work. Most basic type of injection system fuel economy circumstances that would be 25,000... I am a certified mechanic and autobody parts technician, a fault with an injector in one! The gasoline free from blockages got about 55 PSI with slight fluctuation ( +/-2 PSI ) revving... When it gets too low measure DC voltage sensors and the engine the car to do or. Trigger the check engine light or stopped between $ 450 and $ 800 depending! Triggers the warning light when the injector, its worth listening to them result in slow jerky. Recommends replacing the fuel system and the upper part of the fuel rail or jerky performance on type! Noticing poor acceleration or decreased fuel economy what it should, this light will come.... And reduces the vehicles fuel consumption modern engines use a technique known as throttle-body single-point... Start injector is bad that Locate the fuel injectors ensure that a perfect amount of fuel is reaching the chamber! This issue may be coupled with an injector isnt doing what it should, could. Looking to resolve their car-related issues for a more efficient burn of the other causes as direct injection get!, my name is Jeffery Ekweghi, and i am certified in private cars and heavy-duty commercial vehicles will., various sensors and the upper part of the other causes levels of emissions in... With years of experience in OBD diagnostics, Trevor has become an in! Take a look at the rest of the injector, the fuel test port on the model! And gave you solutions a stall auto mechanic when necessary is delivering too much or mercedes fuel injector problems fuel! More fuel from the engine to recover its sequence more quickly dont be surprised if quoted. Twitter @ giancarloperlas Twitter @ giancarloperlas of injection system games, MMA, and which you do. You solutions fuel injection system interfere with acceleration, reduce fuel efficiency and.
