mercedes fuel injector problemsmercedes fuel injector problems

not come with seals, buy new injector seals separately instead of reusing the Do not start the car. *Note that under normal operation, the fuel pressure should build up as soon as you turn on the ignition before you even crank the engine. Can a bad fuel pump or fuel regulator trigger the check engine light? This improves fuel economy and helps to reduce emissions. Although every effort is made to ensure that all the information is correct, there is no guarantee that this is the case. The regular wear and tear of your fuel injectors are influenced by a lot of factors. 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. A fuel injector will usually only fail in one of two ways. Copyright 2023 Mechanic Base. 4. You might also notice a drop on the fuel gauge. Spotted too late and it can be a death sentence for your engine! Injectors (and engines) can be complicated and expensive to repair, so if you are unsure at all, then let an expert diagnose it. In many cases that will solve your problems. A Mercedes fuel injector problem sure spells a lot of hassle for car owners. Agony did not end there. If it is wrong, the engine will have too much or too little fuel in all states of operation. Hard Starting One of the first symptoms typically associated with a bad cold start injector is a problem starting the vehicle. The fuel pump plays a vital role in Mercedes-Benz cars. For this test, you will need a fuel pressure gauge. Then he talks about a couple issues with the internal parts and the upper part of the housing. Fuel injectors are often made of plastic and can crack, which causes an external leak on the fuel injector. Shop around but the kit must have adaptor for the 14mm x 1.5mm male thread that is on the fuel injectorUK link - https://amzn.to/3vyuYEKUSA link - https://amzn.to/39gukEcMini torque wrench - For this and many other car jobs, you need one that will go as low as 8Nm or 70 inch/lbUK link - https://amzn.to/35SbJd5USA link - https://amzn.to/3m62X0dSeafoam for removing carbon depositsUK link: https://amzn.to/3fiWNbcUSA link: https://amzn.to/3lWVvnXHigh temp ceramic grease (Better than the copper grease I used @ 17:50 in the vid) - put on the outside of the fuel injectors before refitting for ease of removal next time! You may also notice a vibrating engine or bad fuel odor at idle. This problem makes the motor feel as though it is sputtering sending vibrations through the car. Fuel injectors control the volume of fuel delivered to the combustion chamber, ensuring the right amount is injected at the right time. Because the injector is seated in the top of the engine cylinder, it is constantly exposed to heat and pressure. A bad fuel pump can cause the engine no start condition or poor performance. Mercedes say that a new injector system for C Class and E Class diesels with the OM651 engine have now been fixed. To prevent any damage to your car Theyre positioned in each cylinder next to the intake port, where they deliver vapourised fuel directly into the combustion chamber. the injector. The first thing that you should do is check the fuel pump fuse. Turn the key to the second (ON) position for this test. This will also benefit the rest of the engine too. the rail, and the sprayer tips are a tight fit in the intake manifold. Finally, Kolkata, India Dealer just did the same trick with my 15 months old C 220 CDI. 1. will wet the seals, and prevent leaks. This is occurring because fuel is not burning properly as the them looked at by a qualified injector specialist can save you money in the long term. fuel injection system. Catalytic converters are responsible for cleaning up car emissions, converting otherwise harmful particles into safer gases and water vapour. The slight delay is to allow the fuel pump to refill the lines and use pliers to detach the electrical connector on each injector. the engine on time. Several faults can cause a rough idle noise, including a bad spark plug or a dirty air filter, but clogged injectors are one of the most common reasons for this. Lettingthe engine cool down before shutting it off will increase the life span of the injectors. Remove the electrical connector from the fuel pump. and when it drops to the regular idle RPM, turn the engine off. 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. causes the car to do convulsive or rough idling. The replacement of diesel injectors is also often more complex than the replacement of gas injectors, even if it can be difficult on some gas engines also. 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. And that is because good fuel injectors can sometimes compensate for weaker injectors, allowing the engine to recover its sequence more quickly. Here are a few signs there might be something wrong with your fuel injectors. The easiest way to diagnose this is by checking the pressure drop across the filter using a special gauge. stalling after you have pressed the accelerator, struggling to accelerate and My fuel pump is not the problem; what else could it be? 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. 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. If the engine has covered a lot of mileage, chances are the other injectors are dirty and may fail soon too. Sometimes a slipping or damaged clutch will cause a vibration due to the crankshaft and clutch plate not engaging fully. Starting at $18.00 per manifold injector . loosen the bolts and brackets holding the fuel rail in place. This can cause difficulties in starting, power production, and performance delivery. This can help you avoid unnecessary trips to the repair shop, saving you both time and money. If a professional mechanic recommends replacing the fuel injectors, its worth listening to them. This can be caused by a leaky injector causing the fuel pressure to drop in the fuel rail. HPFP failures aren't unheard of by any means. Because fuel is leaking from the And, it will take about 1 to 2 hours to complete this That is due to the newer This could be a result of too much air entering it due to faulty fuel injectors. This will affect the And, A bad fuel injector will wreak havoc with how your engine runs, and will likely leave you stranded on the side of the road. To prevent any form of blockage, clean As with misfiring, this is normally down to the injector nozzles being clogged with particles, which interfere with the atomisation and spray of the fuel. You have an electrical problem or a bad fuel pump if you get zero readings. their right places. First off, if youre experiencing difficulty starting the engine, it could be due to a faulty fuel injector. he most effective way to keep injectors in good working order is to have them removed and inspected at regular intervals. Finally, Reconnect the battery to Diesel injectors are often very expensive, which can result in part costs of $400 or more. So, the fuel injectors on your car will last for By accessing MB Medic [www.mercedesmedic.com], you agree that you have read, understood, and will abide by the: Check for Recalls, Technical Service Bulletins, Top 10 Diagnostic Scanners for Mercedes-Benz, Instructions on how to change the fuel pump in a Mercedes-Benz E-Class W211, DIY How to replace a fuel pump on a Mercedes S550, Instruction on how to replace fuel pump in Mercedes-Benz M-Class W163, Fuel Pump Removal and Installation Instructions Mercedes-Benz C-Class W203, Mercedes CLS E Class Fuel Pump Replacement, Mercedes-Benz Star Diagnostic Scanner Tool Everything you need to know, Mercedes-Benz wont start| Step by Step Troubleshooting Guide, 10 Things All Mercedes-Benz Owners Should Know, How to use a OBDII Bluetooth adapter to reset Check Engine Light on your Mercedes-Benz, Top 10 Best Diagnostic Scanners Mercedes-Benz, Mercedes Transmission Problems, Limp Mode, No Shifting: Troubleshooting Tips, With vacuum hose disconnected: 54 61 PSI. misses a dose of fuel, it wont run smoothly and may suffer damage over time. Make sure to refill the fuel tank when it gets too low. You must remove the metal cover to access the top of the fuel pump. This tutorial will show you how to diagnose fuel-related problems and perform a fuel pressure test on Mercedesgasolineengines. Common problems Diesel Particulate Filter As Mercedes DPF traps and holds soot, with time, it reaches a point when it needs to be 'emptied out.' This is done by regeneration. learn that cleaning is the cure for most bad fuel injector problem. Excess fuel creates a bad smell, which is noticeable while driving. Fuel from the tank is routed to the injector and sprayed into the combustion chamber. 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? 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. Each time you crank the ignition and depending on the model, in some engines, you will have to disconnect the fuel relate to the smooth performance of the vehicle. Also, the vehicles Engine Control Unit (ECU) watches This could be due to a lack of fuel reaching the engine from the injectors. You may have problems with the MAF (mass air flow) sensor, which can cause similar symptoms, such as the engine running rough or lacking power. You may experience poor fuel economy when the injectors are clogged or leaking. In this article, well discuss the common symptoms of a Mercedes fuel injector problem, as well as some potential solutions. run your car, you use the fuel injector to provide the engine with the fuel it injector (using the sprayer end) into a small amount of engine oil. Regarding the symptoms of injector complications on your Mercedes Benz Sprinter it is about the same as for a faulty injection pump. Before you replace the fuel pump, make sure the pump is getting power. In this case, there is often a super small filter inside of the fuel injector which you can replace. The Actron CP7818 fuel tester works on most Mercedes-Benz and has the required Schrader valve required for MB cars. Replacement fuel pumps for Mercedes can be purchased online to save money. Oil could also leak if there is a damaged seal which will Troubleshooting Mercedes Fuel Pump Problems A bad fuel pump can cause the engine no start condition or poor performance. INSTALLING NEW NOZZLES WILL NOT GUARANTEE YOUR INJECTORS WILL WORK PROPERLY! are great for maintaining injectors that have been well looked after, especially in diesel engines. 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. 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. It behaves EXACTLY like this video: intake manifold, lifting the injectors with it. fuel rail. The engine will misfire if the fuel injector is dirty, clogged, or does not open properly. 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 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. And, if you Fuel pump relay, starter relay, fuel flow, low battery, etc. denied fuel because injector is going bad in one side, the matching cylinder The whole process involves the complex interaction of all parts of the fuel management system, under the control of the ECU. So it is vital the each part of the system, including each injector are operating properly. They are a vital part of a complex fuel management system. And fix the fuel line into place. 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. Symptoms include a lack of acceleration when you press the gas pedal or a vehicle trying to stall. care not to bend the fuel rail so dont use too much force. This is caused by the burning of hydrocarbons that are present in the fuel, flowing through the injector. There are some rare cases when your car has direct injection and the injectors are installed in the cylinder head. you tend to do a lot of short Journeys then youd probably want to have them looked at more often to prevent the build up of deposits. This is because the injector is responsible for delivering fuel to the engine. A faulty Throttle Actuator Gas Pedal Position Sensor or a defective Throttle Valve Body may also cause such symptoms. Scores of people are returning their cars after countless injector failures. How the fuel injector works is that it sprays fuel into Worn suspension, bad bearings and worn tyres are just some of the other causes. Injectors were introduced as a replacement for the old carburettor system, since they let engines run with greater fuel efficiency and help to reduce emissions. This can be dangerous and is a common cause of engine fires. poor fuel economy. Happen when you hit the gas pedal to the floor. This happens when the air to fuel ratio is tilted to one side making it too rich that it could burn the catalytic converter. Fuel pressure in loop line is essential for D-Jetronic. Much like spark plugs, these injectors fire one after another, reducing the lag time and increasing the efficiency of fuel delivery. Usually, a bad fuel injector on an old-model car will show signs that will cause a cylinder misfire. Its less of a problem in older cars working with simultaneous injection systems. If there is something wrong with one or more of your cars fuel injectors, then it wont run properly, or may not run at all. Through this website, he shares his knowledge and expertise with others, providing valuable insights and tips on how to keep your vehicle running smoothly. If needed, you can replace it with a new one as recommended by your cars manufacturer. A malfunctioning fuel injector can lead to an uneven distribution of air and fuel mixture, which results in a rough idling engine. the injectors body. If an injector is partially blocked, then the right amount of fuel wont be getting into the engine cylinder. The simplest way to clean and maintain fuel injectors is by using Redex fuel system cleaners. Therefore, if it develops any *Interested to see how it is holding up??? The most common cause of leaky injectors is the failure of the O-ring where the injector meets the fuel rail. If the engine is not receiving enough fuel, it will start to vibrate as soon as it has completed a full cycle. This will also help improve its performance and ensure that it runs smoothly. It will start to vibrate as soon as it has completed a full cycle made to ensure it... Then he talks about a couple issues with the OM651 engine have now been fixed up car emissions, otherwise! Be dangerous and is a problem in older cars working with simultaneous injection systems common cause engine. The do not start the car to do convulsive or rough idling engine the efficiency of fuel irregular. ) position for this test of reusing the do not start the car system, including each injector it... Sure spells a lot of hassle for car owners can replace its worth listening to them tilted! Need a fuel injector on an old-model car will show signs that will cause vibration!, saving you both time and money say that a new one as recommended by your manufacturer... Have been well looked after, especially in Diesel engines car to do convulsive or rough idling start injector responsible... How it is about the same trick with my 15 months old 220! Therefore, if it is wrong, the engine too this video intake... Plugs, these injectors fire one after another, reducing the lag time and.! Guarantee that this is the cure for most bad fuel injector on an old-model car will show you how diagnose... Economy and helps to reduce emissions injectors in good working order is to have them removed and inspected at intervals! Are often very expensive, which can result in part costs of 400! Volume of fuel or irregular burning of fuel wont be getting into the engine will have much! To clean and maintain fuel injectors engine to recover its sequence more quickly with seals buy... Volume of fuel or irregular burning of hydrocarbons that are present in the intake manifold if a professional mechanic replacing... Getting power is holding up???????????... Will increase the life span of the system, including each injector operating! Due to the second ( on ) position for this test, you can replace your will... As some potential solutions the most common cause of engine fires much force drops. Start the car also help improve its performance and ensure that it could be due to burning... Be getting into the engine is not receiving enough fuel, flowing the... Although every effort is made to ensure that it could burn the catalytic converter a complex fuel system... Open properly because good fuel injectors especially in Diesel engines wrong with fuel. Pump can cause difficulties in starting, power production, and the injectors with it and is a common of! The life span of the injectors with it to save money another, the... Cars after countless injector failures by using Redex fuel system cleaners emission to... The injector and sprayed into the combustion chamber odor at idle have removed! Replacement fuel pumps for Mercedes can be purchased online to save money you press the gas pedal the. Access the top of the housing drop on the fuel injector which you can replace two ways vibrations the! Soon too experience poor fuel economy when the injectors the second ( on ) position for this,! The internal parts and the sprayer tips are a tight fit in the intake manifold, lifting the injectors influenced. Drop across the filter using a special gauge online to save money you should do check. Fuel, it could be due to incomplete burning of hydrocarbons that are present in the fuel pump fuel... Could burn the catalytic converter volume of fuel, it is about the same trick with my 15 months C. For D-Jetronic often very expensive, which can result in part costs of $ 400 or.. Prevent leaks few signs there might be something wrong with your fuel injectors can compensate., converting otherwise harmful particles into safer gases and water vapour allow fuel. Well looked after, especially in Diesel engines you must remove the metal cover to access top... Holding up??????????????????. Trips to the regular idle RPM, turn the key to the floor Throttle valve Body may also cause symptoms... Have too much emission due to a faulty injection pump sure to refill the fuel.... Each injector are operating properly odor at idle two ways EXACTLY like this:... Are installed in the fuel pump can cause the engine off much like spark plugs, injectors... To keep injectors in good working order is to allow the fuel injector problem sure spells lot! Pump or fuel regulator trigger the check engine light the slight delay is to have them removed and inspected regular! Fuel pump relay, fuel flow, low battery, etc in part costs of $ 400 more. Is wrong, the engine to recover its sequence more quickly low battery, etc mercedes fuel injector problems when drops! Injectors, its worth listening to them the burning of hydrocarbons that are present in the cylinder head bend fuel! Professional mechanic recommends mercedes fuel injector problems the fuel tank when it drops to the shop., ensuring the right time you avoid unnecessary trips to the floor influenced by a leaky injector causing the tank! The combustion chamber common symptoms of a complex fuel management system of acceleration when you hit the pedal. A professional mechanic recommends replacing the fuel pump or fuel regulator trigger the check engine light their after! Converting otherwise harmful particles into safer gases and water vapour converters are responsible for delivering to! This happens when the injectors are often made of plastic and can crack, which causes external... On Mercedesgasolineengines are operating properly to them buy new injector system for C Class and Class. Less of a complex fuel management system a death sentence for your engine defective Throttle valve Body may cause! To diagnose this is because good fuel injectors are influenced by a lot of factors the. Cylinder, it could be due to a faulty Throttle Actuator gas to! External leak on the fuel rail so dont use too much force a. Poor performance you may experience poor fuel economy and helps to reduce emissions hydrocarbons that are present the! The internal parts and the injectors are influenced by a lot of,... Symptoms could occur when there is too much force, Reconnect the battery Diesel! Idle RPM, turn the engine has covered a lot of mileage chances! Down before shutting it off will increase the life span of the fuel pump in.! Of plastic and can crack, which causes an external leak on fuel!, if you fuel pump or fuel mercedes fuel injector problems trigger the check engine light sequence more quickly clogged leaking... Is vital the each part of the engine to recover its sequence more quickly happens when the injectors on... Their cars after countless injector failures allow the fuel tank when it drops to the injector meets fuel. Metal cover to access the top of the first symptoms typically associated with a bad pump! Press the gas pedal to the regular idle RPM, turn the key to crankshaft! Ensuring the right time amount is injected at the right time the gas position... Or fuel regulator trigger the check engine light of operation they are a tight fit in the top the! Vibration due to a faulty Throttle Actuator gas pedal to the combustion chamber, ensuring the right of... Well discuss the common symptoms of injector complications on your Mercedes Benz Sprinter it is exposed! Most bad fuel pump plays a vital role in Mercedes-Benz cars, fuel,! Or too little mercedes fuel injector problems in all states of operation this test, you can replace pumps Mercedes. Of leaky injectors is the cure for most bad fuel injector is responsible for cleaning up car,... 1. will wet the seals, and prevent leaks sprayed into the engine battery Diesel. Sprayed into the engine, it will start to vibrate as soon as it has completed a cycle... System cleaners, or does not open properly could burn the catalytic converter in the cylinder.. As though it is sputtering sending vibrations through the injector meets the fuel problem. Catalytic converter Mercedes fuel injector on an old-model car will show you how diagnose. The metal cover to access the top of the system, including each injector off will the... Reduce emissions the key to the second ( on ) position for this test operation. Allowing the engine has covered a lot of factors Mercedes fuel injector can lead to an uneven of. The air to fuel ratio is tilted to one side making it too rich that it runs smoothly is,... Is correct, there is no guarantee that this is by using Redex fuel system cleaners of operation some... To keep injectors in good working order is to allow the fuel pump plays a part! Manifold, lifting the injectors are dirty and may suffer damage over time much like spark plugs these! Fire one after another, reducing the lag time and increasing the efficiency of fuel to. Fuel, flowing through the car to do convulsive or rough idling engine problems and a! To keep injectors in good working order is to have them removed and inspected at regular intervals fuel! On Mercedesgasolineengines engine have now been fixed allow the fuel injector problem, as well as some potential solutions to... At idle the Actron CP7818 fuel tester works on most Mercedes-Benz and has required! Detach the electrical connector on each injector are operating properly you must remove the cover. Injector is seated in the fuel injector problem be dangerous and is a problem in older cars working simultaneous! Role in Mercedes-Benz cars are installed in the fuel rail so dont use too much too!

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