We have a rebuilt 1985 2L spider motor with Webers, Centerline distributor, C&B 10.9 intake cam and Alfa cast iron 2 into 1 exhaust. She runs ok, I am not sure if carbs need some tuning, but I am getting there.
Question: when idling I pull plug wire #4, almost stalls, pull plug wire #3, same thing, pull wire #2, no change and pull wire #1, no change.
She idles a bit rough, hunts a little around 800 - 1,000 rpms
Why would pulling plug wires #1 and #2 have no effect on the idle?