Mechanics

HAS DTC RANDOME MISFIRE AND #4 AND #6 CYL

2003 Ford Escape

Engine Performance problem
2003 Ford Escape 6 cyl Four Wheel Drive Automatic 170000 miles

I have changed alot of stuff on this the injectors coils plugs mass airflow, the converters fell out and put them back on. The cyl 4 and 6 always says misfire and I checked each wire to and from pcm and they all have good wires back and forth. I have no Idea what to do. It just wont run right I cant even get it to go 5mph it want to fall flat on its face.
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Koppeking
March 5, 2010.



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.

Rasmataz
Mar 5, 2010.