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Miss feels like tire out of balance.

Tiny
CHUBARE
  • MEMBER
  • 1991 CADILLAC DEVILLE
  • 92,850 MILES
Have 91 Cad Dev 4.9 L V8 Replaced plugs, plugs wires, rotor, distributor cap. As car warms up developes sames miss while light acceleration. Help? Car was garaged kept for 5 years until 2 years ago. Runs great, miss really only felt with light acceleration after warm up.
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Tuesday, November 8th, 2011 AT 3:01 AM

2 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Big issues with injectors with that motor. I would have them cleaned as they may be varnished up from sitting.

Roy
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Tuesday, November 8th, 2011 AT 4:41 AM
Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
Youll need to scope the engine to find witch cylinder it is. Try removing the plug wires one at a time. When you remove the wire from the distibuter the engine will slow and pick back up when you reattach it. If the cylinder is bad theyll be no change in the engine. You will need to wear rubber gloves to do this.
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Tuesday, November 8th, 2011 AT 5:43 PM

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