1991 Nissan Pathfinder 1991 Pathfinder misfiering, sputteri

Tiny
GMAN91
  • MEMBER
  • 1991 NISSAN PATHFINDER
  • 6 CYL
  • 4WD
  • MANUAL
  • 182,012 MILES
The truck runs rich, upon giving gas the rpms are low and the trucks spits and sputters. The truck has new plugs, wires, distributor cap fuel filter and air filter, the EGR valve was also just recently cleaned out. The truck is straight piped, no catalytic converter. The only thing I have noticed wrong is the spark plug threads on one of the cylinders is stripped so the spark plug keeps spinning. I am lost and don't know what it could be and have no money to put it in the shop. What could be wrong with it? There is no Check Engine light on and I have had it hooked up to the computer and there is no stored codes in the computer.
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Wednesday, October 13th, 2010 AT 4:44 PM

1 Reply

Tiny
RASMATAZ
  • MEMBER
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. 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. Idle air control valve.
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Wednesday, October 13th, 2010 AT 4:51 PM

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