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Old 01-25-2022, 03:40 PM   #10
dz1087
Registered User
 
Join Date: Feb 2019
Location: Navarre, Florida
Posts: 199
Re: Idle Surge/Starvation/Miss/Vacuum Leak

Quote:
Originally Posted by geezer#99 View Post
If you have a timing light just see what the timing is with or without the vac pot hooked up.
Like I said, simple thing is hook to ported.
Cures your rough idle, doesn’t effect anything else on your timing set up.
The limiter I suggested is one that limits the amount like this one. Not an adjustable pot. The instructions pdf explains it.




https://www.holley.com/products/igni...ts/parts/84281
Just looked up the distro I bought from Summit and looked at the directions. The vac adv is adjustable on this unit, and from reading the directions, they expect you to hook it up to manifold vac. I'm going to pull the timing light and vac pump and gauge out and do some diagnostics on this today and see what I'm getting from the system.

The instructions state to expect 8 to 10 degrees more timing at idle, so they are assuming manifold here. I'm going to start by checking my timing with the vac adv unhooked and the vac line plugged, then with it hooked to manifold to see what it's giving me. Then I'll play around with adjusting the unit and see what I get. Worst case scenario, I'll just go to ported if I can't get it to stop with the erratic idle.
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