Miss in a F-150

1915 FORD F-150
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LUMPO355
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  • 3 POSTS
I have a 1995 Ford F-150 with a 351 engine. The truck has 150,000 miles and it seems to have started to miss, especially around 40-45 mph. I have changed the plugs, wires, air and fuel filter, and checked the timing. The truck was running fine until about a month ago when this started to happen. Any ideas?
Jun 9, 2007 at 6:43 AM
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2CARPRO JACK
  • ✓Experienced Mechanic
  • 11,533 POSTS
Sounds as though that could be a lean miss, around that speed the EGR valve is working causing the lean cruise condition. Try unplugging the EGR vacuum line and see if it still does it and ge back to me
Jun 10, 2007 at 1:10 AM
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