Originally Posted by airboat
You might have got some crap between the needle and seat with the new line? Check fuel pressure, 5-6 PSI good for Holley.. I'm putting a Mallory pressure regulator with a return to tank on everything I build from now on because of pressure creep with non-return regulators. Carter electric pump per chance?
Thanks for the reply airboat. I just got off the phone with Summit and they seem to think the same thing. They said either there's some dirt in the needle and seat or the float level needs to be adjusted. I'm going to give adjusting the float level a try first. It seemed fine to me right out the box, but Summit said I probably never had a problem until I put the carb under load. If it's not the float I'll look into the need and seat. Also, I'll get me a fuel regulator to bring the pressure down from 10 psi to about 6.
Wish me luck!