PeachParts Mercedes-Benz Forum - 92 300E engine hesitation under full throttle accelration.

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John CH

02-24-2001 01:07 PM

This one is tough to describe. Under full throttle my 92 300E (3.0 engine) seems to lose power in the last half of acceleration before shifting up to the next gear. This is true in passing gear as well. If I back off of the throttle I can get most of the power back. Spark plugs and air filter are new and there is no engine miss. Could it be a fuel filter? Fuel pump? The Fuel pump is very quiet. Any help is appreciated.
John CH
92 300E

Benzmac

02-24-2001 09:22 PM

It easily could be in the fuel pump(s) or filter area. I would put a gauge on it and drive it.

John CH

02-24-2001 10:51 PM

Thanks Donnie,
I'll do it. Just another thought. Could a vacuum leak have much the same symptom?
John CH
92 300E

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