F150 MOTOR MISSING

1989 Ford F-150

Tiny

camsmith

July, 14, 2010 AT 3:27 PM

Engine Performance problem
1989 Ford F150 6 cyl Four Wheel Drive Manual 160km miles

motor runs good when cold when warmed up it starts to miss and shake

FOUND 16219 RELATED QUESTIONS

1 Answer

Tiny

rasmataz

July, 14, 2010 AT 3:59 PM

Engine running rough or misfiring can be caused 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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