Question about 1991 Ford F150
5.8L just started problem is truck will not will not idle, I can make it run, but black smoke, fuel rich at idle and runs rough.
Possibly a fuel pressure regulator letting too much fuel in the engine
Posted on Oct 03, 2009
I just bought a 91 5.8L and its not the fuel pressure regulator (just replaced it) its either fuel injectors a clogged Catalytic converter I'm in the process on mine and got it running way better than before when it wouldnt even start. I hope this helps.
Posted on Oct 11, 2009
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Posted on Jan 02, 2017
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