car running terrible

160,000 MILES • V8 • FWD • AUTOMATIC
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MOSSYOAK
  • MEMBER
  • 1 POST
Buick Lesabre starting stalling, extremely high idle and the smell of burning rubber under hood
Jan 21, 2011 at 3:53 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Engine running rough or misfiring can be cause by the following:
1.Defective spark plug.
2.Inadequate spark/coil,defective spark plug wire.
3.Lack of compression
4.Vacuum leak
5.Fautly fuel injectors.
6.Insufficient fuel pressure.
7.Contaminated fuel.
8.EGR valve that is leaking.
9.Oxygen sensors.
Jan 21, 2011 at 10:26 PM
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