30-11-2023, 03:58 PM
Hi
The only thing I can think of that would consistently give weaker mixture for 1/2 compared to 3/4 is an inlet manifold air leak on the 1/2 branch, usually at the gasket between manifold and block. If you alter the carb to get the weak mixture cylinders correct, you end up over rich on 3/4.
The only thing I can think of that would consistently give weaker mixture for 1/2 compared to 3/4 is an inlet manifold air leak on the 1/2 branch, usually at the gasket between manifold and block. If you alter the carb to get the weak mixture cylinders correct, you end up over rich on 3/4.