kaizenator : Backfiring thru carb on 230, adjustment screw Qs

[k8icu]

Re: Backfiring thru carb on 230, adjustment screw
Post by k8icu on Jul 10, 2006, 8:05pm

Its been 10 years since I played with a stock M715, but I know on M151s they are set up to run with a little bit of choke on them. Pull it out a fingers width and your good to go.

I agree to check for a leak in the manifold and vent lines etc. I also wonder if your not having a fuel pump problem. You say the truck runs fine at idle and high rpm, but if you try to go from one to the other it gets jumpy so to speak. You have to ease into it. I'm not wondering if there isn't a small problem with the fuel pump that is causing your wows?

[PseudoZone]

Re: Backfiring thru carb on 230, adjustment screw
Post by kaizenator on Jul 10, 2006, 9:32pm

I don't think there is any prob with the fuel pump, it pumps a lot of fuel out and I have a glass filter and never see any bubbles. I will check for vaccum leaks tommorow and let you guys know what I find.