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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

86 EFi302 fuel issue

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Old Jan 11, 2007 | 06:57 PM
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Dustin_86
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Question 86 EFi302 fuel issue

my 86 f150 still has the issue of temperarly cutting out on the rear tank. it will be fine for 3-4 minutes then it dies, or i can pump the gas and it will back fire through the intake(lean)??? and eather die or recover and run fine for 2 minutes or longer then it may start it over again, or it will be fine for 10 minutes. It only happens on the rear tank at a idel. It I rev it up it will not happen.It only happens on the rear tank. yes it has about 5gallons of fuel, I added some Redline fuel system cleaner and it SEEMS to be getting better.
it it dies from the issue it will not restart on the rear tank. The front tank is 100% normal
tHANKS
dUSTIN
 
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Old Jan 11, 2007 | 07:00 PM
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I'd look for an air leak on the suction side of the pump.

Are you EFI?
 
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Old Jan 11, 2007 | 07:31 PM
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Ya it is EFI
 
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