hesitates and backfires when engine gets hot

1997 MERCEDES BENZ C280
101,000 MILES • 6 CYL • 2WD • AUTOMATIC
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FSHXH0
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  • 2 POSTS
My 1997 Mercedes Benz C280 starts very easy but when the motor is already hot(not overheating) it hesitates and backfires. The idle is good and it does'nt shake at all. It can run only 5-10 miles/hr. but it does'nt cutoff. The fuel pressure is good right on the specs. The check engine light is not on. There is no code and no pending code.What is the problem and how do you fix it?
Feb 24, 2011 at 5:05 AM
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ERNEST CLARK
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Check fuel filter for clogging and leaking fuel pressure regulator. Pull vacuum line. Pressure should increase. If it doesn't, replace. Also check for presence of fuel in line. If any, replace.
Feb 24, 2011 at 1:23 PM
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JEFFREY76
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hey fshxho,
I also have a c280 1997 who has the same problem and my mercedes mechanic cannot isolate the problem without tossing parts, have you resolved that issue? What was the cause?

Thanks
Aug 25, 2011 at 1:12 PM
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