while my engine is running there is a skip/jump

1987 CHEVROLET CAPRICE
135,567 MILES
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TERMITETTP
  • MEMBER
  • 1 POST
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?
Jan 4, 2012 at 3:39 AM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
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
Jan 4, 2012 at 3:40 AM
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