HAD ENGINE REPLACED AND EINGNE INTERMITENTLY HAS MISSFIRES REPLACED ALL PLUGS COILS AND BOOTS TRIED NEW COMPUTER AND STILL MISS FIRES EVERY 7SEC'S
Sep 28, 2010 at 1:19 PM
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RASMATAZ
CAR REPAIR CONTRIBUTOR
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.
Sep 28, 2010 at 9:24 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.