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Starts missing and then will not start?

Tiny
MARTAIN1960
  • MEMBER
  • 1997 CHEVROLET TAHOE
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 125,000 MILES
I put this engine in and it had 117k miles on it now it has 125k I replaced plugs wires cap rotor fuel filter. What it started doing was missing and then stop and do it again and I would shut it off and try to start it later and no go. Had it hauled in to the shop said plugs were bad. Hum how could that be just put them in ok put new ones in and it did it again at this point I am at a loss HELP!
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Tuesday, January 20th, 2015 AT 9:50 AM

2 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
For codes and check fuel pressure with a gauge auto parts rent it. Shod be 60-66 psi
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Tuesday, January 20th, 2015 AT 12:37 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
Yep, I agree with HMAC300, it sounds like the fuel pressure is low because the fuel pump is going out which is common for these trucks. Please go over this guide which shows out how to check the pressure and I have included how to change the pump out in the images below as well.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Drain the fuel first.

https://www.youtube.com/watch?v=VuGxQgWDP-0

Check out the images (below). Please let us know what happens.

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Sunday, October 13th, 2024 AT 11:48 AM

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