My Engine is not starting up?

Tiny
MACJOHNSON
  • MEMBER
  • 1992 FORD F-150
  • V8
  • 4WD
  • MANUAL
  • 140,000 MILES
It would crank and run good cold but when warmed up wont crank back with fire and fuel going to engine. Just spins over?
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Monday, July 4th, 2011 AT 2:51 PM

4 Replies

Tiny
CJ MEDEVAC
  • CERTIFIED MECHANIC
This sounds like a fuel pump or the fuel pump relay has gone out. When you turn the key to the on position without cranking the engine over can you hear the fuel pump run in the tank for 5 seconds?

https://www.2carpros.com/articles/car-cranks-but-wont-start

Please run down this guide and report back.
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Monday, May 31st, 2021 AT 12:46 PM
Tiny
MACJOHNSON
  • MEMBER
Dual tanks no longer getting fuel to rail. Obviously the fuel pump is whats cooling back down after a few hours and allowing it to start. But, fuel pump is pumping it to filter but not through rail. Some kind of shut of somewhere beetween filter and schrader valve?
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Monday, May 31st, 2021 AT 12:46 PM
Tiny
CJ MEDEVAC
  • CERTIFIED MECHANIC
Those had a problem with the fuel switching valve under the truck please check it out.
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Monday, May 31st, 2021 AT 12:46 PM
Tiny
MACJOHNSON
  • MEMBER
Good call, I got a new switching valve and the ruck has been great! Thanks for the tip.
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Monday, May 31st, 2021 AT 12:46 PM

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