Results 1 to 5 of 5

Thread: 91 5.7 TBI runs very rich - 1227747 $42

Threaded View

Previous Post Previous Post   Next Post Next Post
  1. 08-09-2017 #4
    dktool
    dktool is offline
    Fuel Injected! dktool's Avatar
    Join Date
    Oct 2016
    Location
    Covina, CA.
    Posts
    89
    Quote Originally Posted by ravex View Post
    It is possibly even worse than before :-/
    Me:

    I would first confirm that there are no vacuum leaks on the top end, being that is was just reassembled.
    Then move on to step 2, a compression test, then go after fuel, ignition etc.........

    And, make SURE you have a GOOD ground for the pcm .
    Last edited by dktool; 08-09-2017 at 08:15 PM.
    Dean
    Reply With Quote Reply With Quote
« Advice need for Timing adjustments. 94 5.7L TBI. | new to efi tuning but not green »

Similar Threads

  1. 5.7 vortec runs rich
    By dhworkin in forum GM EFI Systems
    Replies: 20
    Last Post: 05-14-2017, 09:17 PM
  2. 1227747 Chevy 350 Datalog running rich
    By jeepaddicted in forum GM EFI Systems
    Replies: 1
    Last Post: 12-07-2014, 07:37 AM
  3. Runs worse as it learns....
    By mikeames in forum GM EFI Systems
    Replies: 20
    Last Post: 06-19-2014, 05:59 AM
  4. truck runs for 30 sec then dies help!!!!!!
    By lilhupper in forum GM EFI Systems
    Replies: 50
    Last Post: 03-25-2013, 02:50 AM
  5. 165 ecm 5.0 runs best with MAF unplugged
    By jameslleary in forum GM EFI Systems
    Replies: 4
    Last Post: 03-23-2012, 05:49 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Forum Rules