FormaCars

Visit our community sponsor

Thanks Thanks:  0
Likes Likes:  0
Results 1 to 4 of 4

Thread: LS 3 first start attempt failed

  1. #1
    Member
    Join Date
    Nov 2017
    Posts
    58
    Post Thanks / Like

    LS 3 first start attempt failed

    Primed the oil system, manually ran fuel pump to set regulator. Cranked it over-no start. Had helper manually run fuel pump just before turning key, so i had 60 psi when started to crank-no start. What should I start looking at first? Any ideas appreciated. Inertia switch is down "on"

    Rick
    Last edited by 60's Kid; 09-15-2018 at 10:55 AM.

  2. #2
    Senior Member
    Join Date
    Nov 2017
    Location
    Placitas, NM
    Posts
    1,450
    Post Thanks / Like
    Does the fuel pump run on it's own when you are cranking the engine?
    There is a pink wire in the LS3 harness that is labeled "Ign Sw", do you have that connected to a switched 12 volt connection?

    Other things that some have forgot.
    Air intake still blocked off from the build
    MAF not connected
    Last edited by JimLev; 09-15-2018 at 08:22 PM. Reason: Fix typo

  3. #3
    Member
    Join Date
    Nov 2017
    Posts
    58
    Post Thanks / Like

    one wire

    Quote Originally Posted by JimLev View Post
    Does the fuel pump run on it's own when you are cranking the engine?
    There is a pink wire in the LS3 harness that is labeled "Ign Sw", do you have that connected to a switched 12 volt connection?

    Other things that some have forgot.
    Air intake still blocked off from the build
    MAF not connected
    You were correct on the pink Ign. Sw. wire. I probably read that a half a doz. times but for some reason did not hook it up. I could hear the fuel pump sequence in before start this time. Started up great! First start! sounds great too.
    Thanks Jim and good luck with your trans.

  4. #4
    Senior Member
    Join Date
    Nov 2017
    Location
    Placitas, NM
    Posts
    1,450
    Post Thanks / Like
    Good to hear it was an easy fix.
    As the others have said "no video"...it didn't happen.

    Hope to have the tranny back together and in the car by Wed or Thursday depending on when the parts arrive.

Posting Permissions

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

FFMetal

Visit our community sponsor