Mechanics

ENGINE BACKFIRE UNDER LIGHT LOAD.

Chevrolet Other

1990 3.3 Plymouth Voyager started backfireing under heave accelleration but now backfires under light load. Have replaced the coil pack, plugs and wires. Sometimes sounds like a clunk deep in the engine. Engine has about 90,000 miles. Any suggestions will be appreciated.


Garceau83
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Garceau83
January 5, 2006.




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