Still backfiring....... Dwell is set at 25 it was at 35 and still backfiring. Timing at 12 btdc bought a vacuum gauge and connected it to the manifold and its jumping around a lot. It wont settle. Should it be connected to a different port maybe the carb where the vacuum advance connects? I drained the gas an put new gas in.
Can some give me the instructions to set the idle mixture? I have a 2 barrel carb with 2 screws in the front. I think its carb related. When I sprayed carb cleaner in the carb while I revved it up it did not backfire....
