Mercedes Diesel OM642 3.0 V6 Engine - Common FUEL LEAK Areas

Where to CHECK on the OM642 Mercedes Diesel Engine for Fuel leaks. In this video, I will show the most likely areas on your OM642 engine to be the cause of a diesel fuel leak. Although this video features the OM642 engine, the areas to check will be common across many other Mercedes diesel engines and look very similar.

Are you experiencing a Diesel smell in car )which can easily be confused with exhaust smell in car)? or maybe you have noticed exhaust fumes in car, especially coming through the heater vents when you pull up to a stop sign or traffic lights, then chances are that you have a diesel leak on your Mercedes diesel engine.

These fuel vapors can make you smell exhaust in car, when it is actually a fuel smell in car. It’s very easy to confuse the two depending on how sensitive you nose is!

Mercedes Benz Diesel OM642 Engine Fuel leak. In this video, I will show how to inspect 3 of the most likely sources of a diesel leak and hence, a diesel smell on the Mercedes OM642 diesel engine.

Link to a Video that shows you in MORE DETAIL how to remove the Air intake, Air box etc so you can INSPECT for a LEAKING FUEL INJECTORS: ➡️ https://youtu.be/7weS1vQ_1OI

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So, in this Mercedes OM642 video, I will show you how to inspect the 3 most likely areas to cause a diesel smell in car on your Mercedes Benz Diesel:

👉 Leaking Diesel fuel filter and / or fuel lines is a very common cause of fuel smell in car and remember, it can seem like exhaust smell in car, the two smells are very similar on a Diesel car

👉 Leaking high pressure fuel pump. The Mercedes OM642 engine is very reliable but it isn’t uncommon for the fuel pump to start to leak on older cars and cause an exhaust fumes in car type of smell

👉 Leaking fuel injector connections / leak off pipe O rings – Similar to the diesel fuel filter above this is a key are to check for a diesel leak

The following Mercedes diesel vehicles should be covered by this Fuel leak Diesel smell in car video:

Mercedes-Benz Sprinter van (2006–Present)
Jeep Grand Cherokee WK/WH (2005-2010 (Europe)
Jeep Commander XK/XH (2006-2010 (Europe)
Mercedes-Benz C320 CDI (2005–2009)
Mercedes-Benz E280 & E320 CDI/Bluetec (2007-2009)
Mercedes-Benz C350 CDI (2009–2014)
Mercedes-Benz CLK320 CDI (2005-2010)
Mercedes-Benz E350 CDI/Bluetec (2010–Present)
Mercedes-Benz G350 CDI/Bluetec (2007–Present)
Mercedes-Benz GLK 350 CDI (2013–2015)
Mercedes-Benz R320/350 CDI/Bluetec (2007–Present)
Mercedes-Benz ML320/350 CDI/Bluetec (2007–Present)
Mercedes-Benz GL320/350 CDI/Bluetec (2006–2012)
Mercedes-Benz GLC 350 d (2016-present)
Mercedes-Benz S320/350 CDI/Bluetec (2005–Present)
Mercedes-Benz CLS320/350 CDI/Bluetec (2005–2018)
Chrysler 300C (2006-2011) (Europe and Australia only)
Mercedes-Benz Vito Van 120 cdi and Vito 204 Sports (2006–Present UK)
Mercedes-Benz GLC 350 D (2017–Present EU)
Mercedes W203 C class
Mercedes C209 CLK
Mercedes S211 S class

In the case of a leaking fuel injector, it has a fuel supply pipe and a fuel return hose. In the past, I have had to tighten the fuel supply connection a little bit to fix a diesel leak, so this is a good area to check. I have also found worn return line connection O rings, also known as leak off pipe O rings and had to replace them.

AND Spoiler alert – The leak on my car was on the diesel fuel filter, so I will show you how I fixed it on my diesel engine

The Mercedes Benz diesel that features in this Diesel smell in car Diesel leak video is a Mercedes Diesel CLK 302cdi, which has the Mercedes OM642 engine fitted. If this video helped you fix your fuel leak and get rid of your fuel smell in car problem.

PLEASE consider sharing the video, here is the link:
Mercedes Diesel Engine OM642 3.0 V6 Engine - Common FUEL LEAK Areas
➡️ https://youtu.be/04ZgZP9lDMI

Did it seem like an exhaust smell in car to you?
Where did you find the problem? Was it the diesel fuel filter, a leaking fuel injector or was it some other problem on your Mercedes diesel engine?
PLEASE Let me know in the COMMENTS!

#revivemyride, #MercedesOM642, #MercedesDeisel

DISCLAIMER Please note that this video and its content is intended for information purposes only. Although every effort is made to ensure that all the information is correct, there is no guarantee that this is the case. This video should not be considered a substitute for seeking independent advice or the services of a professional. Any work that you carry out on your vehicle or vehicles in your care are at your own risk.

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