Car running rugh

Tiny
KEITHCOOPER
  • MEMBER
  • 1993 ISUZU TROOPER
  • 6 CYL
  • 4WD
Plugs on one side are white and outher are black it some times back fires a little why are plugs black on one side
Wednesday, May 11th, 2011 AT 7:32 PM

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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Monday, June 20th, 2011 AT 3:05 AM

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