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Ford enginerunning rough and no power

Tiny
MARKANDKAREN
  • MEMBER
  • 1990 FORD F-250
  • V8
  • 4WD
  • AUTOMATIC
  • 180,000 MILES
Ford f-250 4x4 351 1990 it is running rough and has little power it acts like the plugs and cap got wet. We have not got any rain for weeks. I did change the plugs and wires the cap looks good. Still runs rough any suggestions? The check engine light is not on.
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Wednesday, December 8th, 2010 AT 8:36 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. Vacuum leak
5. Fautly fuel injectors.
6. Insufficient fuel pressure.
7. Contaminated fuel.
8. EGR valve that is leaking.
9. Oxygen sensors.
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Wednesday, December 8th, 2010 AT 10:01 PM

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