What cause this to do that? I have went through 4 different carbs and no change. We recently put a new cam in and broke it in etc, and it will not idle correctly i cant seem to find the issue can anyone help me with this problem?
dont know if this will help but i had a similar problem using a holley duel pumper. the power valves were open at idle because of poor vacuum. when the rpm picked up the idle picked up and the power valves closed and the motor wouldn't run. a cam with a long duration such as a roller has poor vacuum. so it needs a about 18 degrees of initial timing. putting the vacuum advance hose on is advancing the timing where it wants to be. so try this. set initial to 18 degrees. set idle to 900 rpm. put advance hose on and see if it stays at 900.
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