Mercedes Repair Questions? Ask a Mechanic for Answers ASAP
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Any warning lights on when the engine is running .
Like the glow plug light ON solid or flashing, check engine light ?
Okay good ,check fuel filters .
Do you have a lot of black smoke come out the exhaust when you try to accelerate .
You need to checked the basics like air filter fuel filter as the engine is getting too little air ,
or too much fuel .If air filter is clean and no air intake obstruction then you are getting too much fuel ,
This could be a bad Bosch pump ,faulty injectors ,a bad or dirty air flow meter which is very typical .
First do a good basic inspection and change all fuel and air filters if not been done.
Clean MAF sensor with MAF cleaner.
And then have the EGR system tested this is also a issue to cause you your problem .
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