Hopefully someone here can help me out with my carb issue. I have a 1951 f1 with a stock flathead v8. I put a replacement carb from national carburetor 3 years ago, truck ran great. A couple months ago the power valve was leaking, so I replaced it with one that was rated too low, so it was flooding out. Just went through the carb and put a correct power valve and kit from vintage speed, now the carb has to have a little more than 1/4 choke or it dies. I have checked for air and vaccum leaks, carb runs 17in hg of vaccum at idle. I thoroughly cleaned the carb when I had it down, probably only had 100 miles on it when I tore it down. I have checked and replaced the vaccum advance. What recommendations does anyone have?
Holley 94 problem
- Thread starter Sdmarsha1
- Start date
Phil Gillespie
Well-known member
Hows the air filter? Try running with this removed to check for restricted air flow?
Phil NZ
Phil NZ
38 coupe
Well-known member
Sounds like your idle circuits are not working. I would take the carburetor back appart and verify each passage is clear and all gaskets are accounted for. I use water as hot as I can stand and "flow" each passage at the shop sink (with screen over the drain in case I drop something) when rebuilding a carburetor. I sometime have to clean a passage with a single strand of copper from a multi-strand wire to clear a clog.
