Holley Hesitation Question

[BIGSHCLUNK]

I'm sure this type of question has been posted before so a thousand pardons.    A few months back I posted that Nikki had a real rich (gas) smelling exhaust. Got lots of opinoins, went to the local speed shop, narrowed it down to the power valve (leaking).  Ok EZ swap, float lever a little high (this is a 750 DP BTW) bring it down to the bottom of the sight hole. I then threw the old vacum guage on it, tweaked the mixture ever so slightly. Got another inch and ahalf vac/idle sounds great! Exhaust does NOT smell like raw gas anymore  But now coming off the stop light.... dead spot ,unless I really give it a stomp on the gas.  Granted I do like to make them scream on occasion but its not good in traffic. What the heck???   

[Chryco Psycho]

you either need to install a larger squirter or adjust the pump arm to remove any slack between the lever & arm , changing the acclerator pump cam can help too but genererally an instant hesitation is too small squirter

[BIGSHCLUNK]

Chryco as usual .. THANKS for the info.    The weird thing is I had no hestiation before changing the power valve...  Is one that dependant on the other?? 

[Mopar God]

Biggie,

You should first verify that your accelerator pump cam acrew isn't stripped. I have seen this happen more than once. Next, be sure you can insert a .015"-.020" feeler gauge between the pump arm and lever at WOT to ensure the adjustment is correct. Next, check your manifold vacuum at idle in gear. Your power valve should be 1/2 of that value.

If your problem persists, you can increase the squirter size, but in general, a .028" is just about right for most street motors.

Hope this helps...Robert

[BIGSHCLUNK]

Robert and Neil thanks for your imput. It's nice the way info goes back and forth on this site!! Although I was wayb too LAZY to godown to the shop to find a feeler gauge. I played trial and error and ended up leaving 30 ft of BFG'S down my street. THANKS!!!!    

Chris

[Mopar God]

No problem, Biggie....

I'm glad to help in any way possible...Robert