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-   -   Carb. Hesitation (https://classracer.com/classforum/showthread.php?t=57765)

Duster 318 04-26-2015 07:39 PM

Carb. Hesitation
 
I'm running a 340 with a carter AVS. I was wondering if anyone has ever had trouble with a hesitation on the starting line during acceleration?

Bob Bender 04-26-2015 07:54 PM

Re: Carb. Hesitation
 
Check accelerator pump and jetting.

Duster 318 04-26-2015 08:01 PM

Re: Carb. Hesitation
 
I changed the accelerator pump and it helped it. But it still has a slight hesitation?

Ed Wright 04-26-2015 08:05 PM

Re: Carb. Hesitation
 
Have you tried drilling the squirter holes to something like .035"?

Duster 318 04-26-2015 08:39 PM

Re: Carb. Hesitation
 
Haven't done that yet. Might give it a try

Larry Hill 04-26-2015 08:44 PM

Re: Carb. Hesitation
 
Look at the air door tension.

George Mirza 04-26-2015 08:44 PM

Re: Carb. Hesitation
 
Tighten the air valve spring, it needs to be pretty tight on them. Put the accelerator pump rod in the hole that gives the most travel of the pump, I think it's the outer hole.

Duster 318 04-26-2015 09:07 PM

Re: Carb. Hesitation
 
I have the air valve a little loose now. I will give it some more tension. I've got the pump rod in the outer hole it seems to work the best there

Duster 318 04-26-2015 09:47 PM

Re: Carb. Hesitation
 
Has anyone tried sanding down the metering rods? Making them skinnier.

GTX JOHN 04-27-2015 03:06 AM

Re: Carb. Hesitation
 
Easier to change jets or rods than sanding on them and probably a bit
more accurate.
Work with your accel. pump by bending it so you have as much squirt left as
possible when engine is stalled up on line.

Peter Ash 04-27-2015 08:38 PM

Re: Carb. Hesitation
 
pm sent


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