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Old March 12th, 2016, 04:31 PM
Clarke Clarke is offline
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Join Date: Jan 2013
Location: Eureka Springs, AR
Truck: 1962 1500 Wideside 4 speed (305D / SM-420)
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Default Re: Too much timing?

Update:

With the steel vacuum line (for vacuum advance) disconnected from the back of the carb, I connected my vacuum gauge to the back of the carb and here are the results:

0.8 inches @ 500 RPM
2.0 inches @ 800 RPM
5.0 inches @ 900 RPM

When I tested my vacuum advance the other evening, it started to move at 5.0 inches.

My vacuum reading off the back of the intake manifold (at idle) is consistently 19 inches.

Based on what I provided above, sounds like I'm losing vacuum in the carb?
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