Quote:
Originally Posted by Ziggster
Vacuum leaks can come from any number of areas. If the throttle shaft is loose, air can sneak past it and the shaft thru holes in the base. Warped diecast pcs can also be a source of leaks. Of you’re getting a back fire, chances are the PV seal has been blown resulting in gas leaking straight out of the fuel bowl into the intake.
Has it been rebuilt recently? I’ve rebuilt a couple recently, and there was lots of debris/dirt/etc in most of the fuel passages in the towers/brass needles. Also, you might want to check the accelerator pump function.
|
It has been rebuilt twice in about 3 years I think. Last time was a little over a year ago. I could get it rebuilt again but with both rebuilds it has popped while driving under a load and sounded of a small vacuum leak somewhere. I have a tuned “by ear” turn the screws in until it bogs then half to 1 turn out. I might need to set the idle throttle screw back some. I have a video of it running today I will share.
https://youtu.be/RjSSOsBhMN0?si=J1EaxBub20LMcZAn