Was checking my ignition to see what my initial and total advance was for mechanical advance alone and with with vacuum. (360 LA)
Idling @ 800 my initial was 16* with vacuum disconnected. When I slowly began to raise the RPM the timing went down, yes down, to 10*. Then as the RPM continued up it got to a total of 20* at about 3500. I thought I was seeing things so I kept checking it and it did the same thing every time. At least that was consistent.
When I added the vacuum the...
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