needle and seat problem (Holley)

latamud · May 18, 2007

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

iskwezm · May 18, 2007

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.

latamud · May 18, 2007

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 . 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

iskwezm · May 19, 2007

latamud said:
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 . 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

ive been through it, so i know

good luck with the beast

yeloxr7 · May 21, 2007

I got tired of messing with Holleys. Replaced mine with an Edelbrock carb and have had no problems since.

latamud · May 21, 2007

yeloxr7 said:
I got tired of messing with Holleys. Replaced mine with an Edelbrock carb and have had no problems since.

Okay, I'm on it, thanks.

latamud · Sep 27, 2008

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.

D.Hearne · Sep 27, 2008

yeloxr7 said:
I got tired of messing with Holleys. .

That's likely what the problem was. You messing with it . Once you've set a Holley, leave it alone, it'lll be fine for years. You weere likely experiencing an ignition problem. not a carb problem

10secgoal · Sep 29, 2008

Hey D, it's just some redneck tuning gone bad.

D.Hearne · Sep 29, 2008

10secgoal said:
Hey D, it's just some redneck tuning gone bad.

Could be, but he doesn't say where he's from.

chromedog · Sep 29, 2008

dont see how it runs at all with no sparkplug wires!!!
sorry bart, couldnt resist! what ever happened to the project you had hanging from the rafters when i was over? might be interested in that!

needle and seat problem (Holley)

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