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Old 06-17-2011, 01:35 PM
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Wbulk Wbulk is offline
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Join Date: May 2009
Location: American Fork, Ut
Cobra Make, Engine: 66 Cobra
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Default Vacuum Advance

The next thing we checked was the vacuum advance. With the car at idle I plugged the vacuum advance hose to manifold vacuum and checked the timing. It was about 35-37 degrees total. So minus the 7 degrees initial, we had a whopping 28-30 degrees of vacuum advance. This could be a problem and I would not recommend more than about 15 to avoid pinging at cruise. This vacuum canister had an octagon end on it, which I had found in the past to be adjustable. I stuck an allen wrench in the vacuum hole but could not find the screw to turn the advance down. My wrench may have not been long enough. In the end Jeremy may end up buying a new adjustable vacuum canister.

Wayne
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