Cadillac
 

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds

Cadillac Technical Archive | Cadillac Dealers | Cadillac Reviews | Cadillac Dealer Reviews | Cadillac Vendors

Results 1 to 2 of 2

Thread: Fuel Pressure

  1. #1
    Join Date
    Apr 2006
    Posts
    1

    Fuel Pressure

    So i have been dealing with a a problem of my 91 dev. stumbleing. so i did the egr the cat and the o2 check the fuel pressure with key turned(42psi) running it is at about 38 when i give it gas it drops to about 32.BUT here isthe question if i leave the gage hooked up for about 15 min the pressure dropped to about 20psi(note the key is OFF NOT ON) is that a sign of a stuck injector inturn leaking fuel into the cylinder and causing the stumbling.. the stumbling goes away after a bit of driving...it is not throwing any codes at all no codes store either

    Last edited by WChrisEG; 12-19-09 at 05:48 PM.

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
    Join Date
    Jun 2004
    Location
    Woodstock Ill.
    Age
    69
    Posts
    82,284

    Re: Fuel Pressure

    Either that or a leaky check valve and it's running back into the tank. You'll have to pull the fuel rail and turn the key on (DO NOT crank the engine) and look for a leaky injector.


Bookmarks

Cadillac Posting Rules

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Read about Lincoln | Buick | Kia Forte Forum