Giant dead spot on holly carb.
Giant dead spot on holly carb.
mud racing... go to take off on green and smash the pedal to the floor and the engine cuts right out for like 2 seconds then goes like a raped ape..... holley 750 with vacuum secondaries.
any idea's?
any idea's?
racinghabbit- Posts : 550
Join date : 2011-07-12
Re: Giant dead spot on holly carb.
Lean Stumble.
Possible causes, NO or not enough accelerator pump shot.
Some fool puts a screw in the mechanism on the vac secondary linkage to force them open.
Lean idle mixture.
Low float level.
There are more..

dkp
Possible causes, NO or not enough accelerator pump shot.
Some fool puts a screw in the mechanism on the vac secondary linkage to force them open.
Lean idle mixture.
Low float level.
There are more..

dkp
bosshoss- BBF CONTRIBUTOR
- Posts : 484
Join date : 2009-08-10
Re: Giant dead spot on holly carb.
If you are not leaving from an idle, you're using up a lot of pump shot.
Dave C.- Posts : 1268
Join date : 2013-03-23
Re: Giant dead spot on holly carb.
Another thought if you run a vac advance be sure its on the right port.
cool40- BBF CONTRIBUTOR
- Posts : 7180
Join date : 2009-08-31
Age : 47
Location : on the 1/8 mile dyno
Re: Giant dead spot on holly carb.
Really bad vacuum leak??
70FB- BBF CONTRIBUTOR
- Posts : 821
Join date : 2012-07-28
Age : 45
Location : VA
Re: Giant dead spot on holly carb.
Is this a new problem that started out of nowhere, or is it a result after swapping a few parts?
460bronco- Posts : 343
Join date : 2010-04-07
Age : 33
Location : Meridian, Ms
Re: Giant dead spot on holly carb.
was way to lean all the way around
racinghabbit- Posts : 550
Join date : 2011-07-12
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