1976 2.0L D-jet, distributor vacuum Options

[Ron914]

@emerygt350
I was asked my a member helping me with my high idle /vacuum leak problem how I currently have it hooked up .This is the diagram I am using .

[rjames]

If the MPS won’t hold vacuum or is set way too lean, your idle will likely hunt no matter what else you do.
Fix the MPS first.

[emerygt350]

If the MPS won’t hold vacuum or is set way too lean, your idle will likely hunt no matter what else you do.
Fix the MPS first.

It's a really weak leak, and with a leak you are actually going rich. Hunting is normally a lean condition.

[rjames]

If the MPS won’t hold vacuum or is set way too lean, your idle will likely hunt no matter what else you do.
Fix the MPS first.

It's a really weak leak, and with a leak you are actually going rich. Hunting is normally a lean condition.

You're right regarding a leak leading to a rich condition.
That said, my experience with a MPS that had a cracked diaphragm resulted in a hunting idle and I couldn't fully resolve it by adjusting the mixture via the ECE. The hunting idle is what clued me in that the MPS may be bad in the first place. The OP may get different results though.