Reply to "Tuning Holley 4150 650 DP #4777-3"

Hi Joe
First I must say that my knowledge is more about tuning a functioning carb than fixing it. But let's give it a go. I've never heard of that problem before. Do you run regular gas? Live 10 feet from salty water? I assume the symptom is that you almost no acc pump squirt, and therefore it bogs down terribly? Or? Can you describe symptoms more?

Here's what I would do:
1. Next time it's been standing, don't start it, take of air filter, look down primary venturis, move throttle. Is there two solid pump squirts? If yes, it's not the ball, if no, read on
2. Take it apart, clean it, maybe change the ball from a repair kit, could be faulty material/size, just guessing. If fixed, good, if not, read on
3. Sometimes you have to give up. I had a Holley off and on a car 15 times to fix a problem, realized life's too short, bought a new Summit carb, no problems since. The Summit carbs also don't need as much continuous adjustments as Holleys, probably due to the material they're made of. And I can see that you're not a stranger to installing a new carb...

I'm interested in hearing the solution