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Old 12-11-2011, 05:43 AM
Blown Camaro Blown Camaro is offline
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Demon carb help

Hey guys. I could use some help here on my 6-71 blown small block I just finished. It has two boost referenced Demon 650BC carbs on it. It is extremely lean at idle even with all the mixture screws out 2.5 turns. I test drove it and it wants to stall when I pull up to a traffic light, then it recovers from 500rpm back to 1100rpm where it idles. It's a good thing I have a loose converter as I am having to drive it with two feet! I got it back home and covered the idle air bleeds and the rpm increases and smooths right out. When I uncover them the engine rocks and has a random misfire. Tapping the accelerator pumps also smooths things out so I know she is real lean on the idle circuit. When I accelerate it bogs then takes off hard from 1/3 throttle up. So the main circuit is close. The pump shot is also correct because if I wing the throttle is reponds RIGHT NOW.

Any help on the idle circuit?
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