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·I hope someone can help with w
I hope someone can help with what seems like a simple tune-up problem, but one I can't solve. I had my carburettors rebuilt earlier this year by Pierce Manifolds. I had problems with the throttle shafts sticking due to warped bodies. After replacing the carbs I reset the points, checked and set the ignition timing (12-14 degrees advance). With the motor warm I synchronized the carbs (Uni-syn) and then set the idle mixture with a Colortune. The idle mixture screws were all set rich after the rebuild. The problem is that anything more than a gentle push on the accelerator results in popping from the carbs even when warmed up. I have occationally experienced this popping before with a cold motor but not to this degree. I use 94 octane(10% ethanol) gas in the car. Any idea if this is a timing issue, mixture, combination, none of the above? Your suggestions are welcome.
I hope someone can help with what seems like a simple tune-up problem, but one I can't solve. I had my carburettors rebuilt earlier this year by Pierce Manifolds. I had problems with the throttle shafts sticking due to warped bodies. After replacing the carbs I reset the points, checked and set the ignition timing (12-14 degrees advance). With the motor warm I synchronized the carbs (Uni-syn) and then set the idle mixture with a Colortune. The idle mixture screws were all set rich after the rebuild. The problem is that anything more than a gentle push on the accelerator results in popping from the carbs even when warmed up. I have occationally experienced this popping before with a cold motor but not to this degree. I use 94 octane(10% ethanol) gas in the car. Any idea if this is a timing issue, mixture, combination, none of the above? Your suggestions are welcome.