Slight Backfire

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Dec 7, 2002 | 08:25 PM

Fordman350

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From: Seattle USA

Slight Backfire

Occasionally when I rev my '94 F250 460 up to about 4,000 RPM, it will do a very minimal backfire when I let off. Is this anything to be concerned about?

Dec 9, 2002 | 10:35 PM

LxMan1

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From: Louisville,Ky.

Slight Backfire

No worries, it is just the smog pump pumping air into the exhaust, pretty common and normal.
Jimmy

Dec 9, 2002 | 11:01 PM

Mil1ion

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Slight Backfire

This thread will be moved to the 87-96 truck forum as it isn't 385 engine series specific question.

Dennis

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