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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Bad Miss

 
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Old 03-07-2011, 04:34 PM
GuyJoe69
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Bad Miss

Hey I have a 88 F-250 with a 351windsor with a tune port fuel injection and it has a bad miss. When I pulled the plugs 2 of them were gas fouled out. I changed them and in 30 minutes the same two were fouled again. What could it be?
 
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Old 03-07-2011, 06:34 PM
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Check your fuel pressure regulator (FPR).
Pull the vacuum hose off the nipple on top and turn on the key with a cold engine and see if fuel comes out of the nipple.
If fuel comes out the FPR is bad.
 
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Old 03-07-2011, 06:39 PM
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I'll do it thanks
 

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