fuel problems key on not running is 43 psi?

1994 CHEVROLET CAPRICE
132,594 MILES • 5.7L • V8 • RWD • AUTOMATIC
Avatar
JOHN SWARTZ
  • MEMBER
  • 6 POSTS
car has a lt1. Fuel pressure, with key on not running is 43 psi. Holds for a few seconds then drops to zero.Car will start and run with a shot of ether and will start after.What could be the problem?
Jan 18, 2015 at 8:20 AM
Advertisement
Avatar
HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
check for leaking injectors/fittings if not that replace fuel pressure regulator.
Jan 18, 2015 at 10:52 AM
Avatar
STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
Yep, the fuel pressure regulator might be leaking internally, I would remove the vacuum line to see if fuel is present and if so replace the regulator. Here is the location. Check out the images (below). Let us know how it goes
Image (Click to enlarge)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Oct 17, 2024 at 6:21 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
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.