1. check for vaccume leaks. 2. This is a old school timing trick to help. or at least give you a point of where the timing should be. disconnect the vaccume advance then set the idle as low as possible. next advance the engine slowly till the motor runs freely or in othere words the idle picks up and the engine is running irradically. then stop and start retarding it till the engine idle starts to slow and seems to have a normal lope idle thats the point where the timing is close to what your engine needs. set the carb at 1 1/2 turns then set the idle. increase as necessary 1/4 a turn till you feel it runs good.
