1986 Nissan Truck Engine

132,000 MILES • 4 CYL • 2WD • MANUAL
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QUAYLT
  • MEMBER
  • 1 POST
Truck runs rough like it is missing. I changed the spark plugs and wires a month ago. It just started doing this a few days ago.
Aug 31, 2010 at 2:18 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 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.
Sep 3, 2010 at 11:39 PM
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