1991 f-150 mod5

Asked by May 22, 2018 at 09:54 PM about the 1991 Ford F-150

Question type: Maintenance & Repair

I just changed the oil pan gasket oil pump
and rear main seal in my 1991 Ford F-150
had to drop the transmission to do it . Put
everything back together and put in floods
truck started up with one turn and
sounded great ran for about 20 seconds
then died . No it’s like it’s not firing . Have
even changed the fuel injector regulator
still won’t start . Is it vapor lock or bad oil
pump ?

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