Join Date: Jan 2019
Location: Auburn University, Alabama
Those are really good, simple carbs. I would turn the idle screws in just til they stop, not hard, then back out 1 and 1/2 or 2 turns each. Then check engine off (static) timing for the number one cylinder at top dead center of the compression stroke, make sure the ignition rotor is pointing at the number one position on the cap when it would be in place then check the engine running (dynamic) timing and see if you can get it to about 6 degrees before top dead center with a timing light. If it is way off, perhaps your balancer ring has slipped and setting it by the timing marks will have the timing too far advanced or retarded. Be sure on cold cranking the throttle plates are open just a hair, the choke is closed correctly and the engine isn't flooded from pressing the accelerator a bunch of times. It usually takes a few cranks for the fuel bowl to fill and every thing to do its job on initial start after rebuild.