The fuel pump plays a vital role in Mercedes-Benz cars. How the fuel injector works is that it sprays fuel into This also includes a fuel pump, fuel pressure regulator, various sensors and the engine ECU. It behaves EXACTLY like this video: 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? A faulty injector will cause the engine to misfire, and this will trigger the engine management light. egular oil and filter changes will go a long way towards maintaining a healthy engine. A fuel pressure check on your Mercedes-Benz will tell you whether the fuel pressure is within range. This is often due to them becoming clogged with debris, although some mechanical and electrical issues can also affect fuel injectors. 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. 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. If you have difficulty finding the fuel pressure port (Schrader valve) on your Mercedes, start from one of the fuel injectors and follow the fuel rail. You will use a little pressure Yes, a bad fuel injector can damage your car engine so badly that the car cannot run again except it is fixed. probably wont, or make much difference to a car that is running properly. Mar 19, 2020. Fuel injectors are used in all modern engines, and are a vital component in the fuel management system. Dad, nerd, loves cars, video games, MMA, and his only daughter. Remember, if you want to try an injector cleaning, the best way is to do it to all injectors at once to avoid the different amounts of fuel spray after the cleaning. Fuel related misfires can be caused from too much fuel. normal circumstances that would be every 25,000 miles or 40,000 Kms. Now, press the injector into the injector cleaner for less than $15. Certified Automotive Diagnostic Technician. You will need to have the car ECU scanned for error codes to be absolutely sure that its an injector problem. Remember that ECU can only vary opening times of injectors to dose fuel. Note that not all faults will trigger the check engine light. Do not start the car. 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. engine so check the Manufacturers manual to confirm. 14th February may be synonymous with a well-known annual event that is Valentines Day, but 2022 also marks the celebration of another significant milestone in automotive history as Redex, the fuel additives manufacturer, turns 100 years old. 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. They will be able to diagnose the problem and recommend the best course of action. The age and model of your Mercedes are primary contributors to these as well as your driving and maintenance habits. Driving a car hard combined with short start stop journeys will increase the wear and tear on injectors. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. If you diagnose your MB fuel system and find that the fuel pump has failed, your only option is to replace it. 1. run your car, you use the fuel injector to provide the engine with the fuel it It pumps the gasoline from the fuel tank to the engine. 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. The fuel pump pushes petrol or diesel through the fuel lines to the injectors. When you shut off your engine, the injector will soak up the heat of the engine. Since the fuel injector is directly connected to the engine, any problem with the fuel injector will result in a malfunction of the vehicles performance. By regularly inspecting these parts for signs of wear and tear, you can help reduce the risk of fuel injector failure in Mercedes vehicles. you between $50 to $100 to clean a very dirty injector. Required fields are marked *. Vibration is a fuel injector problem Normal reference is 2.0 +0.1 Bar, which means from 2.0 to 2.1 Bar. intake manifold, lifting the injectors with it. System vehicle. In this case, there is often a super small filter inside of the fuel injector which you can replace. Then you can disconnect the battery. Now, use the socket and ratchet to denied fuel because injector is going bad in one side, the matching cylinder The oxygen is extracted from the engines air, while the fuel is taken from the fuel reservoir. Up until the 1980s, fuel injection was controlled in most engines by a carburettor. But do you know the difference between them, and which you should be using? Fuel injectors spray fuel into a cars engine using electronic controlled valves, capable of opening and closing many times a second. So, the fuel injectors on your car will last for in multi-port fuel injector vehicles. Fuel injectors control the volume of fuel delivered to the combustion chamber, ensuring the right amount is injected at the right time. 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 . What Causes It and What You Should Do, Tire Pressure Sensor Fault: How to Troubleshoot and Fix the Issue. Because the nozzles are so small, the fuel is atomised, which makes it burn more efficiently. The average fuel injector replacement cost is between $100 and $500, depending on the car model and labor costs. A badly performing injector will affect the running of the engine. Otherwise, it may cause an engine fire. This will affect the The Mercedes-Benz M276 is a series of 3.0-liter and 3.5-liter gasoline V6 engines with direct fuel injection system. Meaning Of Chevy Volt Propulsion Power Is Reduced Message. Signs and Symptoms of a Faulty Fuel Injector. fuel rails before you crank the engine. If your check engine light flashes, check your fault code memory with an OBD2 code reader. berlin Creates A New Fusion Of Iconic Eyewear, Petition to Overturn Abu Dhabi Grand Prix 2021 In Favor Of Lewis Hamilton Gains Massive Traction, Mercedes-Benz Explains That EV Assembly Is Almost The Same As Gas Cars, Driver Gets A Field Day Testing The 2024 Mercedes-Benz CLE Coupe On Ice. Fuel related misfires can be caused from not enough fuel. A car generally has one fuel injector per cylinder. Let us begin. Links to where you can buy a Mercedes fuel pump are provided below. So do take some time to observe all A Mercedes fuel injector problem sure spells a lot of hassle for car owners. In this video, I will show yo. Florida Van Man 100K views 2 years ago 25:20 My Turbo Diesel Mercedes Has A Nasty Engine. This can cause difficulties in starting, power production, and performance delivery. sources. But, if the new injectors you bought did For example, if you notice the check engine light on, the scanner can assist you in identifying the problem and determining if its a simple issue you can address at home or if you need to take it to a mechanic. As many of you may know, MB have had some problems with their BlueEfficiency fuel injectors failing. 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. Make sure to refill the fuel tank when it gets too low. This is because the ECU is calling for more fuel from the injector but not receiving it in the combustion chamber. If you perform a fuel pressure test and find out that the fuel pump is not generating fuel pressure, dont rush to the conclusion that the fuel pump is bad. If your Mercedes-Benz doesnt start, always test that you have enough fuel pressure. 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. This can help you avoid unnecessary trips to the repair shop, saving you both time and money. the RMP falls more than necessary. 1. BenzWorld.org forum is one of the largest Mercedes-Benz owner websites offering the most comprehensive collection of Mercedes-Benz information anywhere in the world. A broken injector will cause an engine to misfire and this will trigger an error code. the ON position and wait 10 seconds before turning the engine to start fuel-injected structures, the injectors work in sequence, so if when the car engine Injectors (and engines) can be complicated and expensive to repair, so if you are unsure at all, then let an expert diagnose it. the injector and work it back and forth while pulling it to remove it from the 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. When this occurs oil will leak from 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. There are many moving parts inside an injector, and over time they can fail due to normal wear and tear or lack of maintenance. Turn the key to position II and look at the reading. 0Leaking Fuel Injector Seal - Spotted early, it's an easy fix. To prevent any damage to your car INSTALLING NEW NOZZLES WILL NOT GUARANTEE YOUR INJECTORS WILL WORK PROPERLY! Your email address will not be published. berlin Creates A New Fusion Of Iconic Eyewear, Petition to Overturn Abu Dhabi Grand Prix 2021 In Favor Of Lewis Hamilton Gains Massive Traction, Mercedes-Benz Explains That EV Assembly Is Almost The Same As Gas Cars, Driver Gets A Field Day Testing The 2024 Mercedes-Benz CLE Coupe On Ice. Any possible fuel leakage should be investigated straight away. The easiest way to pinpoint the faulty component is to read the fault codes using an advanced OBD-II diagnostic scanner. They do this by spraying small amounts of fuel directly into the combustion chamber, allowing for a more efficient burn of the gasoline. The whole process involves the complex interaction of all parts of the fuel management system, under the control of the ECU. While a professional mechanic may charge symptom that corresponds to other engine problems that arise from other This, in turn, Each time you crank the ignition and Its also a good idea to regularly change the fuel filter and only use good quality fuel. Trevor (AKA The Motor Guy) is a passionate car enthusiast with a love for troubleshooting and diagnosing engine problems. Also, the ABS light is on but I do not believe its related. Note that a defective fuel injector (eBay link) can also be the root of many problems. Fuel related . because they are not cleaned regularly. Save my name, email, and website in this browser for the next time I comment. He has been working as a car mechanic for over 10 years, and the majority of them specialized in advanced car diagnostics and troubleshooting. This requires immediate attention, as your engine could also start knocking and cause serious damage to your engine. This can cause difficulties in starting, power production, and performance delivery. 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. In many cases that will solve your problems. 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. This doesnt really tell you anything, except that there is a problem with the engine. injector is malfunctioning. Faulty fuel injectors can make it difficult for the engine to accelerate properly. If you suspect that a broken injector is your problem, then the easiest way to diagnose it is to check the engine ECU for error codes. 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. Changing dealers can impact the following items in your cart: Choose a Dealer Mercedes-Benz of Lynchburg HPFP failures aren't unheard of by any means. Possible Solutions to Your Mercedes Fuel Injector Problem. Troubleshooting Mercedes Fuel Pump Problems A bad fuel pump can cause the engine no start condition or poor performance. This is usually best left to fuel injector experts. The high pressure fuel pump (HPFP) is responsible for delivering fuel at incredibly high pressures to support the direct injectors. 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. *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. 4. This improves fuel economy and helps to reduce emissions. 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. If the engine is not receiving enough fuel, it will start to vibrate as soon as it has completed a full cycle. If you plan on running up high mileage on your car, then there are a few things you can do to help. 1. poor performance and rough running: a failing fuel injector can cause an engine to misfire. If you have a diesel car, your fuel injector is likely located in the cylinder head, but gas fuel injectors are installed on the intake manifold in almost all cases. Scores of people are returning their cars after countless injector failures. If too little fuel is reaching the combustion chamber, the ECU will stop the engine, causing a stall. This can often be accompanied by a shaking sensation while the car is at standstill or stopped. Step 1: Turn the car on. As many of you may know, MB have had some problems with their BlueEfficiency fuel injectors failing. You should replace your fuel filter every 20,000 to 60,000 miles, moving towards the latter with newer vehicles. Also, any delay could lead to overheating and the Take They have an atomising nozzle that distributes the petrol or diesel evenly, for optimum combustion and efficiency. If its not working properly, then the engine wont receive enough fuel and will have trouble starting. A faulty fuel injector can lead to a significant drop in fuel economy. 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. see a small metal clip that looks like a staple pin, use a small flathead This is because the injector is responsible for delivering fuel to the engine. Try starting the motor and get a fuel pressure reading. It has nozzles which spray fuel into Or, to browse our complete range of fuel additives, click here to visit the homepage. What Happens When Your Catalytic Converter Goes Bad? Copyright 2023 Mechanic Base. 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. will not fire. because fuel injection systems use one injector per cylinder, your engine may not completely shut down if only one injector isn't working. learn that cleaning is the cure for most bad fuel injector problem. The engine cover can be pulled up as it is held with four tabs and no screws. Sometimes fuel injectors can develop faults which impact on their performance or cause breakdowns. An inefficient fuel injector will reduce the overall fuel economy of the engine. depending on the model, in some engines, you will have to disconnect the fuel The fuel injectors are located on the engines intake side, under the fuel rail, which is often located on the intake manifold. Its also worth outlining how catalytic, 5W-30 and 5W-40 are among the most common engine oil types. Mercedes say that a new injector system for C Class and E Class diesels with the OM651 engine have now been fixed. 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. Turn on the engine and inspect the filter for any leaks. It arrives via a nozzle that is opened and closed with a needlevalve. their right places. Much like spark plugs, these injectors fire one after another, reducing the lag time and increasing the efficiency of fuel delivery. Introduced to replace the carburettor, single-point fuel injectors are inexpensive and easy to service, though they lack the precision and efficiency of other injection systems. To diagnose this issue, you need to check each spark plug for signs of wear and tear. When the injector is not working properly, it can cause the engine to run lean, which means that theres less fuel being burned. If the fuel injector is not operating properly, then other parts of the engine will be affected and over time can be damaged. If your cars idle noise has changed and feels rougher, the fuel injectors may not be delivering fuel as they should. In a bid to reduce exhaust emissions, manufacturers were forced to change how fuel consumption was controlled by engines. Housed inside each cylinder, they supply fuel at the exact moment and quantity to ensure responsive power output and maximum efficiency. engine could stall. Remove the Schrader valve cap. 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. But how much does it cost to replace injectors? Fuel injectors are often made of plastic and can crack, which causes an external leak on the fuel injector. carry out this routine. Disconnect the fuel lines from the filter. before 1980 had carburetors. Fuel pressure in loop line is essential for D-Jetronic. Follow his Facebook page at https://www.facebook.com/benzinsider and Twitter @giancarloperlas. Your Mercedes-Benz . The most effective way to keep injectors in good working order is to have them removed and inspected at regular intervals. Mercedes-Benz cars use an electric fuel pumpto pump the fuel to the fuel injectors. Often the reason why the fuel pump isnt working is that it is not getting power due to electrical problems. This causes any fuel left in the injector to evaporate, leaving behind hard deposits inside the injector. Before replacing, ensure you have the right tool to remove the fuel pump. A misfiring engine will interfere with acceleration, reduce fuel efficiency, and result in loss of power. have a fault or have a hole or be damaged. Fuel from the tank is routed to the injector and sprayed into the combustion chamber. 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! former ones. A fuel injector usually costs between $50 and $300. With that, read on to learn how you can go about them to prevent potential damage to your Mercedes engine. will also benefit the rest of the engine too. misses a dose of fuel, it wont run smoothly and may suffer damage over time. Each injector is linked to the electronic control unit (ECU) that controls how much fuel is injected and when it is injected. Although there are a few different reasons why a check engine light can switch on, it could be down to a fuel injector. 4. In most cases, you will hear the fuel pump run for several seconds until it builds the necessary pressure for the engine. manufacturers claim that These cleaners will give your car extra power or Increased MPG. There was a problem during manufacturing when particles may have been trapped between the fuel rails and injectors which can cause gas leaks. If an injector is partially blocked, then the right amount of fuel wont be getting into the engine cylinder. 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. Pro Tip: Before you fix the new fuel injectors, put the tip of the it whenever you cover 30, 000 miles. and when it drops to the regular idle RPM, turn the engine off. Replacement fuel pumps for Mercedes can be purchased online to save money. Theyre more accurate and precise than single-point injectors, and make it much easier to achieve the correct fuel-air ratio in the engine. Injectors, put the Tip of the fuel pump isnt working is that is... Fuel as they should times of injectors to dose fuel advanced OBD-II scanner. This improves fuel economy worth outlining how catalytic, 5W-30 and 5W-40 are the... Mercedes-Benz M276 is a fuel pressure is within range injectors on your car last. Have enough fuel pressure reading Seal - Spotted early, it will start to vibrate as soon it. Fuel management system, under the control of the engine off, the... Is often a super small filter inside of the engine to clean very. 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