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1993 Buick Regal miss

Tiny
DILLYRAY2
  • MEMBER
  • 1993 BUICK REGAL
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 110,000 MILES
After replacing tps and engine light out car developed miss afterwards have replaced plugs and wires performed ohms check for fuel injectors replaced cracked ignition coil still have miss
Friday, May 14th, 2010 AT 7:53 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Engine running rough or misfiring can be cause by the following-inspect and test all the following below:
1. Defective spark plug.
2. Inadequate spark/coil, defective spark plug wire.
3. Lack of compression
4. False air leakage.
5. Faulty fuel injectors.
6. Insufficient fuel pressure.
7. Contaminated fuel.
8. EGR valve that is leaking.
9. Oxygen sensors.
10. Idle air control valve.
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Saturday, May 15th, 2010 AT 4:45 AM

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