Vacuum Advance?
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Professional
Joined: Jul 2009
Posts: 120
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Yes I did have it hooked up. I wondered that, but if it's not hooked up when you set the timing, then hook it up when you drive it, won't the timing be off?
Legend
Joined: Jun 2009
Posts: 8,025
Likes: 72
From: orangeville ontario
i think that is the point. usually your vacuum decreases as your throttle opens so the timing would jump to where it was set without the vacuum line hooked up which i think would advance the timing.