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Will not start has good fuel pressure?

Tiny
DANO5544
  • MEMBER
  • 1986 FORD F-150
  • 5.0L
  • V8
  • 4WD
  • MANUAL
  • 150,000 MILES
It will not start and it has good fuel pressure and is getting good firing. I squirt a little fuel into the throttle body and it starts. That's the only way I can get it to run. When I quit squirting the fuel in it shuts off.
Wednesday, May 26th, 2021 AT 6:44 AM

3 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

The ECM is what commands the injectors to fire and allow fuel into the cylinders. It is based on the signal from the ignition module.

It could be the ECM that is bad as well. I attached the location for you below and a wiring diagram for the injectors. Make sure you have power with the key on to the injectors. The ECM controls the ground side of the injectors.

Right Hand Instrument Panel

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-test-a-fuel-injector

Roy
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Monday, May 31st, 2021 AT 12:47 PM
Tiny
DANO5544
  • MEMBER
  • 1 POST
Where is the PCM located?
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Monday, May 31st, 2021 AT 12:47 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
I attached the location for you in my last post. It is under the right side of the dash behind the kick panel. Remove the kick panel and release it from the bracket.

Roy
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Monday, May 31st, 2021 AT 12:47 PM

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