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1988 Nissan Truck Engine miss

Tiny
MECHANICA
  • MEMBER
  • 1988 NISSAN TRUCK
  • 4 CYL
  • 2WD
  • MANUAL
  • 160,000 MILES
Persistent engine miss on one cylinder is cured for a short time by fitting new plugs, points, etc. Returns within 500 kms. Engine has been overhauled - piston rings, bearings, etc.
Tuesday, June 29th, 2010 AT 11:51 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 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. 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, June 30th, 2010 AT 1:43 AM

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