1993 GMC 4.3

Tiny
JERRYMATTHEWS
  • MEMBER
  • 1993 GMC C1500
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 280,000 MILES
Engine wont ideal up when it dose it pops out the exhaust
Wednesday, January 5th, 2011 AT 12:30 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Engine running rough or misfiring can be cause by the following:

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

1.Defective spark plugs
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.Throttle position sensor.
11.Manifold absolute pressure sensor
12.Mass Airflow Sensor
13.Idle air control valve

Note: If it doesn't apply disregard it-
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Thursday, March 17th, 2011 AT 12:07 AM

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