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Old 05-03-2021, 11:09 PM   #5
dmsfrr
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Join Date: Aug 2012
Location: Abq, NM
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Default Re: Delay in throttle response when giving it more gas

If either of the rubber diaphragms in the (dual) vacuum canister is leaking, the ignition timing can't advance correctly and you'll have a vacuum leak.

You can test them by connecting a length of clean tubing to each one and sucking on it to see if it holds pressure, and slightly turns the plate the points are mounted on. (photo two)
Attached Images
File Type: jpg '56 dist, T-Bird.jpg (45.5 KB, 6 views)
File Type: jpg 55 dist, big arrows.jpg (70.9 KB, 10 views)
File Type: jpg '56 HOLLEY 4000 CARB - LOAD-O-MATIC - vac advance hook-up diagram c.jpg (81.3 KB, 11 views)

Last edited by dmsfrr; 05-03-2021 at 11:16 PM.
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