fuel delivery issues

1994 GMC C3500

249,000 MILES • 5.7L • V8 • 2WD • AUTOMATIC

TIMOTHY BOWER

MEMBER
5 POSTS

Replaced fuel pump in tank. would operate like it should, at first install, an hour or so goes by, not working at all. got fuel to TBI, but no fuel past the end of fuel rail at TBI. Any help would be highly appreciated. Thank you

Apr 27, 2019 at 10:05 AM

SCGRANTURISMO

✓ASE Certified Mechanic
4,897 POSTS

Hello,

I have included the information that you requested in the diagrams down below. Please go through the fuel system description and the factory diagnostic troubleshooting guide and get back to us with what you are able to find out, please.

Thanks,
Alex
2CarPros

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Apr 27, 2019 at 12:21 PM

Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.