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. A failing EHA valve can cause concerning and dangerous side effects that make your Mercedes difficult, if not impossible, to driveincluding serious engine problems. If youre experiencing problems with your Mercedes-Benz, the YOUCANIC full system diagnostic scanner can provide invaluable assistance in troubleshooting the issues. Fuel pressure in loop line is essential for D-Jetronic. Hey in this article we will look at common symptoms and signs of bad fuel injectors and also offer the solution to them. 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. Some of the problems are CHECK IT OUT - https://youtu.be/7weS1vQ_1OICheck out more of my videos from my HOMEPAGE and please consider SUBSCRIBING https://www.youtube.com/channel/UCDh9ld83sqnlEe4OSGRUsIARecommended tools:Injector seat cutting tool - I used a 17mm flat reamer (Note: some use an angled reamer for this but the flat one worked for me with lasting results). 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. The injector and rail will have drops of fuel, so use the shop could cost you between the sums of $800 to $1,500 depending on the type of 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!). not come with seals, buy new injector seals separately instead of reusing the Gettingthem looked at by a qualified injector specialist can save you money in the long term. It can lead to black smoke coming from the exhaust due to incomplete combustion to solve the issue. 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. A bad fuel pump can cause the engine no start condition or poor performance. Finally, Your email address will not be published. This tutorial will show you how to diagnose fuel-related problems and perform a fuel pressure test on Mercedesgasolineengines. If the check engine light is on, consider yourself lucky, as it can make your diagnosis easier. 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. Old age can make the injector to As a result, some fuel isnt burnt off meaning more harmful emissions are sent to the exhaust system. Common Causes a Sprinter Won't Start. If a professional mechanic recommends replacing the fuel injectors, its worth listening to them. Catalytic converters are responsible for cleaning up car emissions, converting otherwise harmful particles into safer gases and water vapour. Another great way to keep injectors in good health is to regularly add a fuel injector cleaner to to your fuel tank. Tighten the Bolt of the fuel rail. Now insert the key and turn it to This will also help improve its performance and ensure that it runs smoothly. supply of fuel into the engine and you will notice the cars revolution per Magnus is the owner and main author of Mechanicbase. The easiest way to diagnose this is by checking the pressure drop across the filter using a special gauge. Although there are a few different reasons why a check engine light can switch on, it could be down to a fuel injector. If the injector cant deliver the dose of fuel called for by the ECU, the fuel-air mix in the combustion chamber will be off, which can lead to misfiring or a sudden drop in acceleration. Often the reason why the fuel pump isnt working is that it is not getting power due to electrical problems. The vehicle operates normally when you press the gas pedal slowly. You may also see other error codes such as P0101, P0300, P0299. They do not cost that much and you can read the fault code memory at home. If your car has covered a lot of miles or ifyour engine is underperforming or randomly misfiring, it may be caused by bad fuel injectors. Importing Cars to Australia From Japan Guide. The most common cause of leaky injectors is the failure of the O-ring where the injector meets the fuel rail. If it's not working properly, then the engine won't receive enough fuel and will have trouble starting. project. (In other words, if its adding too much or too little.). Up until the 1980s, fuel injection was controlled in most engines by a carburettor. 0Leaking Fuel Injector Seal - Spotted early, it's an easy fix. This job requires you to be extremely careful because you will work near fuel, and there is always a fire risk. System vehicle. This is because the ECU is calling for more fuel from the injector but not receiving it in the combustion chamber. because they are not cleaned regularly. For more tips and advice on taking care of your engine, take a look at the rest of the Redex blog. in multi-port fuel injector vehicles. injector cleaner for less than $15. A bad fuel injector will wreak havoc with how your engine runs, and will likely leave you stranded on the side of the road. 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. fuel injection system. Like any other engine part, regular maintenance is the key to keeping them going. Changing dealers can impact the following items in your cart: Choose a Dealer Mercedes-Benz of Lynchburg If you regularly monitor your fuel consumption, you will notice a decrease or increase in fuel efficiency due to a poor injector. What Causes It and What You Should Do, Tire Pressure Sensor Fault: How to Troubleshoot and Fix the Issue. If too little fuel is reaching the combustion chamber, the ECU will stop the engine, causing a stall. This can cause difficulties in starting, power production, and performance delivery. Over time, these will eventually block the injector. Required fields are marked *. 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. Under normal circumstances that would be every 25,000 miles or 40,000 Kms. Copyright 2023 Mechanic Base. This is occurring because fuel is not burning properly as the 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. Howeverthe best fuel injector cleaners are great for maintaining injectors that have been well looked after, especially in diesel engines. 4. How Much Does It Cost to Replace Fuel Injectors? The most common sign of a bad fuel injector is the check engine warning light, which appears on the dashboard. This doesnt really tell you anything, except that there is a problem with the engine. 2. The fuel pump plays a vital role in Mercedes-Benz cars. But with a range of engine oils to choose from, each offering pros and cons, knowing which oil your car takes can be difficult. Mercedes may jerk during acceleration from a stop. Otherwise, it may cause an engine fire. 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. If the fuse is good, you must test the fuel pressure. 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. Remove your old filter and mount the new filter in the old filter's place. former ones. For a better experience, please enable JavaScript in your browser before proceeding. engine could stall. You would recall that vehicles made There are some rare cases when your car has direct injection and the injectors are installed in the cylinder head. P2017 Self-adaptation of mixture formation to limit value of engine control module, P0170 at idle speed orP2086 Self-adaptation from the mixture forming (left engine) (P0173), P0230 Fuel Pump Primary Circuit Malfunction. loosen the bolts and brackets holding the fuel rail in place. I created this site to share my expertise and experience with car lovers looking to resolve their car-related issues. Before replacing, ensure you have the right tool to remove the fuel pump. This can lead to decreased performance and reduced fuel economy. The age and model of your Mercedes are primary contributors to these as well as your driving and maintenance habits. Sometimes fuel injectors can develop faults which impact on their performance or cause breakdowns. fuel-injected structures, the injectors work in sequence, so if when the car engine You will need to have the car ECU scanned for error codes to be absolutely sure that its an injector problem. The ECU triggers the warning light when the injector is delivering too much or too little fuel. Here's how to tell if your fuel injectors are bad and how much it costs to replace one. For example, a fault with an injector in cylinder one would give a code of P0201. the injector. And, if you The fuel injector problems symptoms could occur when there is too much emission due to incomplete burning of fuel or irregular burning of fuel. Any possible fuel leakage should be investigated straight away. And what are the advantages of doing so? So it is vital the each part of the system, including each injector are operating properly. Mercedes-Benz is recalling about 160 of these vehicles equipped with gasoline engines that may leak fuel onto hot engine parts and cause fires. Will A Bad Mass Air Flow Sensor Throw A Code? You will see a metal rod over the are great for maintaining injectors that have been well looked after, especially in diesel engines. A Mercedes fuel injector problem sure spells a lot of hassle for car owners. because fuel injection systems use one injector per cylinder, your engine may not completely shut down if only one injector isn't working. Any work that you carry out on your vehicle or vehicles in your care are at your own risk.#LeakingFuelInjector; #BlackDeath; #OM642; #MercedesInjectorLeak; #MercInjectorLeak; #CLKInjector; #CclassInjector; #SprinterLeakingFuelInjector; #W209; #W203; #FuelInjector; #MercedesSprinterFuelInjector; #LeakingDieselFuelInjector; #DieselInjectorLeak; #MercDieselFuelInjector; #MercedesDieselFuelInjector Next, reinstall the fuel rail. Many are having difficulty with customer service and others are returning their cars under the sale of goods act. The oxygen is extracted from the engines air, while the fuel is taken from the fuel reservoir. Also, you can get a bottle of fuel The ECU (engine control unit) uses sensors to work out the right time to fire the injectors and spray fuel into the combustion chamber. But how much does it cost to replace injectors? Theyre more accurate and precise than single-point injectors, and make it much easier to achieve the correct fuel-air ratio in the engine. If your Mercedes-Benz doesnt start, always test that you have enough fuel pressure. Our current turnaround times are as follows. Possible Solutions to Your Mercedes Fuel Injector Problem. depending on the model, in some engines, you will have to disconnect the fuel If youre driving a Mercedes and are experiencing some performance issues, its possible that you may have a problem with your fuel injector. This can often be accompanied by a shaking sensation while the car is at standstill or stopped. Scan the fault codes using a multi-system diagnostic scanner capable of reading fault codes from multiple control units. But, if you need to replace the old Mercedes recall letters will be mailed February 8, 2022, and dealers will replace the fuel rails and fuel injectors. Because the injector is seated in the top of the engine cylinder, it is constantly exposed to heat and pressure. Links to where you can buy a Mercedes fuel pump are provided below. care not to bend the fuel rail so dont use too much force. Also, dont forget to plug in the fuel Injector Mercedes Benz Sprinter HS: This is the case when your injectors are entirely clogged or when you have an electronic problem, it will not let anything go. Open the hood of your Mercedes-Benz. This requires immediate attention, as your engine could also start knocking and cause serious damage to your engine. This can be caused by a bad fuel filter, which lets dirt pass to the fuel injector. Step 3: Touch the negative lead of the DVOM to a ground source. Changing the fuel pump on a Mercedes-Benz is quite easy, especially on E-Class, C-Class, S-Class, and ML models. You might also notice a drop on the fuel gauge. This happens due to inadequate Normal reference is 2.0 +0.1 Bar, which means from 2.0 to 2.1 Bar. respective holes then push each injector until they slide into place. rail until it stops. 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. Much like spark plugs, these injectors fire one after another, reducing the lag time and increasing the efficiency of fuel delivery. injector is malfunctioning. denied fuel because injector is going bad in one side, the matching cylinder When the ECU activates the injector, pressurised fuel is sprayed into the combustion chamber through the nozzles. A badly performing injector will affect the running of the engine. The fuel pump may have failed if your Mercedes cranks but wont start. 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 . 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. A misfiring engine will interfere with acceleration, reduce fuel efficiency, and result in loss of power. However, 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. Spotted too late and it can be a death sentence for your engine! Heres a list of the most common reasons why a fuelinjector fails: Over time the nozzle of the injector can become dirty, and partially blocked. The less fuel reaches the engine, the lower your fuel economy. 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. Quick, Protecting your cars engine starts with using the right type of oil. (6 Common Symptoms), Can a Seized Engine Still Drive? If an injector is partially blocked, then the right amount of fuel wont be getting into the engine cylinder. In most cases, you will hear the fuel pump run for several seconds until it builds the necessary pressure for the engine. The whole process involves the complex interaction of all parts of the fuel management system, under the control of the ECU. But what happens when they become clogged or develop faults? Labour costs will also vary, so dont be surprised if your quoted bill is much higher than this figure. Additionally, the scanner can perform diagnostic tests on various systems, such as the ABS, airbag, and steering systems, to help identify the underlying cause of any issues. Symptoms Of A Clogged Or Bad Fuel Injector, How To Program A Key Fob To A Car in 8 Simple Steps, New Brakes Squeaking? Also, the vehicles Engine Control Unit (ECU) watches Trevor (AKA The Motor Guy) is a passionate car enthusiast with a love for troubleshooting and diagnosing engine problems. needs to perform its work. 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. run your car, you use the fuel injector to provide the engine with the fuel it an engine isnt running efficiently, this can load extra pressure on injectors. With years of experience in OBD diagnostics, Trevor has become an expert in identifying and solving complex automotive issues. Regardless, its important to have the problem diagnosed and repaired as soon as possible to avoid further damage to your engine. Mercedes c250 amg sport plus 2013. The fuel injectors cost may differ a lot depending on if you have a gas or diesel engine. When you turn the ignition on, listen carefully to the rear seat (near the fuel tank). A fuel injector will usually only fail in one of two ways. Note that a defective fuel injector (eBay link) can also be the root of many problems. "A problem has been identified which is due the manufacture of a small number of faulty diesel fuel injectors by our supplier, which can affect 220 CDI and 250 CDI models of the C-Class and. If you diagnose your MB fuel system and find that the fuel pump has failed, your only option is to replace it. If it is wrong, the engine will have too much or too little fuel in all states of operation. You should get around an 11-13 volt reading. However, it may be different for your First, align all the injectors over their As many of you may know, MB have had some problems with their BlueEfficiency fuel injectors failing. Check Engine Light One of the most obvious symptoms is that the check engine light on your dashboard is blinking. 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. 3. Then, with your hand gloves on, grip This causes the engine to run rich, leading to more fuel being used than necessary. 1. This video should not be considered a substitute for seeking independent advice or the services of a professional. Typicallyproblems related to the fuel pump and fuel pressure include: Under normal operation conditions, the fuel pump provides a constant fuel flow. You want battery power flowing, but don't want the engine running. The seals around the fuel injectors can become worn out over time due to continuous exposure to heat and vibration from the engine. In some cases, your fuel injector is actually just clogged with dirt. 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. 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