Back firing!
Thread Starter
Racer
Joined: May 2004
Posts: 305
Likes: 9
From: Martell NE
Back firing!
I need some help. I just got my motor together and can't get it to run right. 350ci 224/224 .525I .525E TPIS big mouth, 52MM, Pro Topline Alm heads, Roller 1.6 rockers, Long tube headers, 2 "dual exhaust, underdrive pulley, no air pump or Egr, Adj reg, Cold Air box. This is what I have. The problem is when it starts it begins to back fire off and on. I have checked the dist to see if I was a tooth off and it looks good. I am at a loss! Can't stand it! Almost ready to haul it to the dealer.
Burning Brakes
Joined: Sep 2003
Posts: 875
Likes: 0
From: Louisville KY
I don't know much about the TPI systems, but you cam seems a bit large for the stock computer. Do you have a chip for it? Check the plugs to see if running rich/lean as well. I just use a regular timing light on all of the plug wires to see if they are firing.
Burning Brakes
Joined: Dec 2003
Posts: 770
Likes: 0
From: Madison Mississippi
I did the same thing when I got mine back together. It was my rocker adjustment, they were all too loose. It would begin to backfire when you gave it gas around 2-3K RPM. Check yours, it may be that simple. 
Good luck
Good luck
