Demon carb - Team Camaro Tech
Troubleshooting Diagnosing problems done here.

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post #1 of 3 (permalink) Old Feb 7th, 03, 10:55 AM Thread Starter
Join Date: Nov 2002
Location: Ocoee, fl, usa
Posts: 4
I have a just of idle hesitation. Car tries and does die, when giving some gas on take off. Sometimes a very quick start will get past it. It is an auto.

It most like is the carb. But no luck so far with adusting the idle screws.
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post #2 of 3 (permalink) Old Feb 7th, 03, 11:22 AM
DjD's Avatar
Join Date: Apr 1999
Location: Fortuna, CA
Posts: 26,547
Two ways to approach this. Change the accel pump cam to strech out the pump shot to cover the flat spot during transition off the idle circuit or install a larger squirter which will dump more fuel into the transition mixture. This may result in a pump cam change as well. Make sure the accl pump operates and squirts just as the throttle is moved first.

What happens is when you step on the gas large amounts of air get into the carb and intake faster than the gas gets there. You get a temp lean condition and the accel pump squirts extra gas to over come the lean condition.

I should have asked if this was a vac secondary carb as the secondaries opening too soon can cause the same symptoms. A heavier sec diaphram spring would be in order if this were the case.

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post #3 of 3 (permalink) Old Feb 7th, 03, 12:45 PM Thread Starter
Join Date: Nov 2002
Location: Ocoee, fl, usa
Posts: 4
This sends me in the right direction. They are mech secondaries by the way.

I just rebuilt the carb. So I might want to check the accel pump, to see if it is working properly.

I did not know you could change the cam, but I see kits are available.
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