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No start

Tiny
RANDY WATSON
  • MEMBER
  • 1999 GMC SUBURBAN
  • 222,300 MILES
Engine will not run. Replaced gas tank, fuel pump. Engine runs with gas being poured into throttle body, but when you quit pouring gas engine stalls.
Monday, May 15th, 2017 AT 1:54 PM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,490 POSTS
Hello,

It sounds like the fuel pump is not getting power. Can you hear it run in the back?. Here is a wiring diagram for the fuel pump and the location of the relay.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Please run some tests and get back to us so we can continue helping you.

Cheers, Ken
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Wednesday, May 17th, 2017 AT 4:10 PM
Tiny
RANDY WATSON
  • MEMBER
  • 2 POSTS
Have power to fuel pump can hear pump turn on have 6opsi to fuel rail
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Thursday, May 18th, 2017 AT 8:00 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,490 POSTS
Excellent, Now let see if the injectors are getting pulse, here is a guide that will help.

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

Please run this test and get back to us so we can continue helping you.

Cheers, Ken
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Thursday, May 18th, 2017 AT 10:50 AM

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