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1986 Ford F-100 no fuel pumping to engine

Tiny
MATASAC145
  • MEMBER
  • 1986 FORD F-100
  • V8
  • 4WD
  • AUTOMATIC
  • 217,000 MILES
I am getting power to my high pressure fuel pump but its not sending fuel to engine what could be the problem
Sunday, February 28th, 2010 AT 5:52 PM

3 Replies

Tiny
OBXAUTOMEDIC
  • MECHANIC
  • 3,711 POSTS
Hello,

Ok, you are getting power to it. Does it run when key it turned to on position?

If High pressure pump is working then need to check low pressure pomp that is in the tank.

.
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Sunday, February 28th, 2010 AT 6:10 PM
Tiny
MATASAC145
  • MEMBER
  • 2 POSTS
It only worked with a jumper wire
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Sunday, February 28th, 2010 AT 6:28 PM
Tiny
OBXAUTOMEDIC
  • MECHANIC
  • 3,711 POSTS
Ok, in the engine compartment on the driver side firewall there is a Fuel Pump Cut-Off Relay. Check out link below for testing....

https://www.2carpros.com/how_to/how_do_i_check_a_relay.htm

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Monday, March 1st, 2010 AT 8:23 PM

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