breaking up at low throttle

[fatandlazy]

hey guys,, i see there are some amazing mechanics around here,, so here we go..

4 mill stroker, 60 over, cool heads, not sure of dome size, v forc reeds, toomey t5s,

27 pilot, 300 mains, k&n filter, florida weather no real elevation..

 

carbs seem to break up at low rpm, runs rich from idle to 1/8 throtle, then seams to snap crakle pop till 1/4 throtle,, then screeams away.. when im off the throttle,, and bouncing around idle,,(slowing down) snap crackle pop again till i am on the hammer again. sounds like twisting a handle full of that air bubble wrap,, any ideas,, i am a big dummy so please help..

thank you in advance

[BANSHEEMANIAC]

sounds like its running lean? whats your needle clip set at? have you tried to adjust your airsrews?

[fatandlazy]

i have stock carbs, needle at second clip, have messed with screws a little, have them at 1/2 turns from bottom now

[okbeast]

If you've got 27.5's and the air screw .5 out from all the way in then you're probably rich on that circuit. Try backing it out .5 turns, wait 20 seconds then go for a ride, keep doing that till it clears up.