Quadrajet Problem Solving > Dialing in your rebuilt Quadrajet carburetor
running out of fuel
dlong70elcamino:
Boy i,m really fighting with this Q jet i built for my Elcamino it acts like it running out of fuel at the drag strip above 5000 rpm I usually shift at 6500. It launches great but bogs out at high rpm like someone shut off the fuel. Gonna try a 110 gph mechanical fuel pump next.It,s weird it didn,t do this with the 600 Holley that was on it but it had two fuel bowls and this one has only one acts like bowl is sucking dry if i let off it will come back but when i push it open again same thing. Bummed :( It had 6-7 psi with old pump don,t know what it is at high rpm.
von:
I've seen people have success with this problem by removing the small inlet fuel filter and installing a larger in-line filter between tank and carb. If that doesn't help, remove the nylon sock in the tank. Those can get clogged with rust, sediment, etc.
carmantx:
What is your quadrajet number?
What is your float height set at?
Did you use Cliff's High flow needle/seat?
dlong70elcamino:
It,s a 17057213 carb all parts came from Cliffs 135 needle and seat float was set to spec for that carb don,t remember the setting but its not low most Q jets the float should look level in the carb when set right.
carmantx:
Measure the float. set to 9/32"
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