needle and seat problem (Holley)

latamud

Founding Member
Oct 22, 2002
791
2
19
Tampa, FL
Hi all,

I set my float levels on a carb I rebuilt with the engine not running but the fuel pump on. I have a bypass return on the regulator and set it at 6psi. I have glass sight plugs on the carb. After setting the primaries I was working on the secondaries. I noticed that the primary bowl was slowly taking in fuel, not as fast as if the float was still rising. I'm thinking my new needles and seats need to "seat"? Or is this bad?

Thanks for any input. I'm a few hours away from firing up the Clevor for the first time.

Bart
 
I noticed when my carb dries out from no fuel the needle will stick for a while or you have dirt in the seat.

I usually run the car with the pump off to suck any dirt out if it does this, but with your "new " engine, tap the carb with a mallet lightly if the float sticks.
 
Thank you for the reply Mario. I was worried this was too simple of a question that everyone would overlook it. I almost called John :D . I just got done setting the idle, 1100 rpm. I built the carb to the DIY blow through specs and the primary jets are under 70. Sounded great until I opened the secondaries, low 80's or high 70's. I did pull the needles and seats out to check for obstruction earlier and did run the engine with the pump turned off. I didn't see the bowls over fill with the pump turned on so I think I'm good.

Thanks again,

Bart
 
Thank you for the reply Mario. I was worried this was too simple of a question that everyone would overlook it. I almost called John :D . I just got done setting the idle, 1100 rpm. I built the carb to the DIY blow through specs and the primary jets are under 70. Sounded great until I opened the secondaries, low 80's or high 70's. I did pull the needles and seats out to check for obstruction earlier and did run the engine with the pump turned off. I didn't see the bowls over fill with the pump turned on so I think I'm good.

Thanks again,

Bart
the simple stuff can make you do this:bang:

ive been through it, so i know:(

good luck with the beast:nice:
 
This post is way old but had a relapse today and thought about it. This problem was caused by me adjusting the float level by forcing the needle and seat too far down crushing the little tab on the float mount (which comes in contact with the base of the needle). To fix this, pull the float out of the bowl and pry the tab back up a little.