WHILE MY ENGINE IS RUNNING THERE IS A SKIP/JUMP

1987 Chevrolet Caprice

Tiny

Termitettp

January, 4, 2012 AT 3:39 AM

I cant tell weather its doing the intake, compression, power or exhaust stroke. Any idea what that could be? The motor was just rebuilt and I was out test driving it. I shut the engine off then started it back up and it would run smooth then jump, run smooth then jump and it keeps doing this in park. When I put it in drive and I accelerate I hear a popping noise when I come off the gas and let it coast the popping noise backs off but the engine is still jumping. I don't know whats going on. Any suggestions?

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Tiny

ASEMaster6371

January, 4, 2012 AT 3:40 AM

The popping may be a backfire. Check all the plugs wires to be sure they are tight and not touching anything hot.
Check all your grounds as well for good, solid connections.

Roy

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