need help with popping on line

Travis,

Kinda hard to tell. But it sounds like it kinda started out ok then got worse?

I watched it several times and it looked like the bumps really threw it into fits? Did you get that at all by driving it. It seems like it holds up a bit then lets out a big "pop' or "bang"!

But I kinda associate it with he bumps from this particular video.
If that were the case. Could the float be bouncing causiong too much fuel to come past the needle and seat? Maybe an off road or spring loaded needle and seat? Yo would know better than I from where the problems started but it looked like you had your most RPM's out of the start and on the first part of the track until you started hitting the bumps, then it gave up pretty quick. I could be wrong!

Let us know what you find!!


Jeffro

I just had a very similar weekend. I could rev it up at the line, sounded right, up to 6500 no prob. As soon as the light went green, POP- SPUTTER-POP, all the way down the track. Didn`t have time to troubleshoot during my class, so i just had to deal with it and lose. So changed jets down, and entered into the pro-stock class, same results, but not quite as bad. Still lost. Then i took out all the plugs, checked all the wire connections, ground, pulled fuel lines and checked for flow. All looked good. Got in my truck, Stalled it to 4000 in gear, and thought" I fixed it" So i ran over to the booth and entered into the pro mod class, just to see if it worked( wife wasn`t impressed) . Seemed to clear up 90% But now against the big dogs, still lost, and still popped a little. Went home rebuilt the Dommy, decided to haul it out for a test drive in a field. Well now it wouldnt start, noticed the light on my 6AL-2 was flickering, I reached down and wiggled the harness, and it went solid on. Found that the pin on the msd harness was falling out the back side of the square connection, so the bumps in track was making it lose connection. Damn! all this for a 1 second fix......Just wanted to share my pain It`s running like an animal now!

Here is another pass. May not be the carb but I still kinda think it may be associated with the bumps. Maybe loose connection wire as Stitches suggested or still may be fuel slosh!