1997 Ford Truck multiple misfires

1997 FORD TRUCK
175,000 MILES • V8 • 2WD • AUTOMATIC
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JAKEL
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  • 1 POST
i have a 97 ford f150 with a 5.4liter engine. I had it hooked up and the code came back for multiple misfires. I changed the crank positioning sensor as well as the cam position sensor and it still misfires. Is there anything else that i need to check
Jul 3, 2009 at 8:18 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
1997 Ford Truck multiple misfires

Engine misfiring can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel.
Jul 3, 2009 at 9:17 AM
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