Stumped and Frustrated with a Holley 670 Hesitation

inertia said
With that black spring in the secondary,, they prob shouldn't have been opening till 3500-4000 rpm,, when was your hesitation,, did it change rpm with the different springs..??

Also, if your accel pump is adjusted way too far,, you may be getting a short squirt, cuz its only getting 1/2 a "pump".. adjust accel lever till it just touches the pump arm and takes out any slack....

My hesitation is thru the entire throttle range. It really does not matter what speed or RPM Im going. If Im at a dead stop and go WOT it bogs. If Im cruising at 30mph 1400 rpm and kick it down the car bogs before it takes off, then goes like a bat out of hell. If Im cruising at 60mph 3k rpm the car acts the exact same way as I just said. Really it does not matter what Im doing with the car it just bogs.

I did look at my accel pump tonight and it does seem to be tight on the arm. I can back it off a little bit so that its adjusted like you said.

Snake said
I still think the stock jetting of 65 is way to lean,just me.

You just installed one of these on your car right? Is your set up similar to mine? Like I said I have some bigger primaries jets I think they are 69's. I could install them.

I guess what is are some of the first things I should be checking for. I have a lot of suggestions so far or should I just try them all? I dont always think that is a good thing because if your on track with one thing that is improving it then you should stick with that until you no longer have options. Then move onto the next one, otherwise you just get overwhelmed.

So what are some of the initial adjustments I need to check? Float levels, accel pump lever, crap in the bowls, complete tear down?