Join Date: Nov 2014
Location: Marshfield, MA, USA
Might be something simple like the fuel filter. If you change it and it doesn't help it might need the floats adjusted. I'm no expert on carbs... but I have 2 Holley 6150s. The one I have on my car now's been there since I bought it. It's on it's 3rd engine. I'd rebuilt the other one, but when I put it on the engine it ran like crap.
My carb (the old one) sprung a few leaks earlier this year. When I pulled the old floats my plan was to use the newer ones from the carb that didn't work very well. I took note of the number of threads where the old floats were adjusted to, matched them to the newer floats, installed the new ones, and everything is working nicely.
There are a number of people more qualified here to help with carb issues, but I thought I'd just throw this out there.
From what I understand, the floats regulate how much fuel is allowed into the bowls. If they're not adjusted correctly, you could starve the engine, or flood it.
69 Convertible, 351W, T5, E-Brock Performer 351-W intake, Performer Plus cam, Holley 4160, power assist, dual exhaust, 4-wheel manual drums.
Last edited by FrankieThe69Kid; 07-01-2018 at 11:48 PM.