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Old 01-25-2022, 01:05 PM   #9
geezer#99
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Re: Idle Surge/Starvation/Miss/Vacuum Leak

Quote:
Originally Posted by dz1087 View Post
HEI distro. I believe it's Summit Racing branded. I don't think it has an adjustable diaphragm.

Should I look at total advance at idle with a vacuum pump hooked to the vac advance prior to moving it to ported? If it idles rough on full vac, is there really any benefit I might see with getting an adjustable advance, like cooler temps while idling?
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
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