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> 1976 2.0L D-jet, distributor vacuum
Ron914
post Mar 24 2025, 05:21 PM
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@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 .
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emerygt350
post Mar 25 2025, 05:31 AM
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That was my first thought. But you don't have your advance hooked up right?

Best thing to do is cap everything now and slowly readd. Get it warm, then plug it all. Aar, retard, decel, etc. you can even check the mps by pulling the vacuum off the plenum while it is running and plug it with your finger. It will be rich but it shouldn't rev once you plugged it. If you have a vacuum pump you can just put 20inhg in the hose going to the mps and plug the plenum.

If everything is plugged and it's still at 1400, grab a can of carb cleaner and start spraying around the plenum, the runner boots, and the injectors. If you don't get any change it has to be your timing (or possibly that combined with a lean idle mix).
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Ron914
post Mar 25 2025, 07:59 AM
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QUOTE(emerygt350 @ Mar 25 2025, 06:31 AM) *

That was my first thought. But you don't have your advance hooked up right?

Best thing to do is cap everything now and slowly readd. Get it warm, then plug it all. Aar, retard, decel, etc. you can even check the mps by pulling the vacuum off the plenum while it is running and plug it with your finger. It will be rich but it shouldn't rev once you plugged it. If you have a vacuum pump you can just put 20inhg in the hose going to the mps and plug the plenum.

If everything is plugged and it's still at 1400, grab a can of carb cleaner and start spraying around the plenum, the runner boots, and the injectors. If you don't get any change it has to be your timing (or possibly that combined with a lean idle mix).


After we installed the motor my brother in law used his vacuum pump and verified the advance plate movement in the distributor but he does not live by me so I will go and invest in one . The vacuum off the distributor is no longer hooked up ,it is open to to air now. Once I got that part correct things got much better .You were correct in your previous comments about that and I had it connected wrong. I think I could be close but something is still not quite right.
So let me make sure I understand .
1) get car warmed up with everything hooked up
2) then unplug all lines connected to the plenum and plug them.
3) Now re add those unplugged lines one at a time to the plenum looking for a change
4) while not running unplug the line going to the MPS from the plenum and put 20inhg on the unplugged line that goes to the the MPS and plug the plenum then start engine and check again?
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