[yelcab1]

Originally Posted by haasad

Idle circuit on the carbs? common prob usual fix is to drill the circuit bungs manually clear them and re bung. My r car ( and several others) displayed exactly the symptoms you describe even after multiple ultrasonic cleans etc. Frustrating thing is often its not obvious that a blockage has been cleared but the motor runs fine after

I did this and it got the Cyl2 to respond to the idle screw now. So, that is positive. The remaining issue is 1) not idling unless the stop screws (1 each carb) are in 2-3 turns, and 2) slow to return to idle.

I will check timing through the little port next.