vacuum advance

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bashmaki

Post subject: vacuum advance

PostPosted: Sat Oct 17, 2015 7:12 am

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3 Deuce Weber

Joined: Tue Oct 06, 2015 10:56 am
Posts: 66
Car Model:

I have, here, an 1984 D150 with a slant in it. The distributor has no vacuum pod on it. I'm assuming the advance must be electric some how.

Also I cannot find a vacuum diagram on the web for this distributor and engine combination.

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wjajr

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PostPosted: Sat Oct 17, 2015 10:26 am

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Supercharged

Joined: Sat Feb 16, 2008 1:25 pm
Posts: 5611
Location: Downeast Maine
Car Model:

No vacuum advance distributor is part of Lean Burn system. Additional advance over mechanical was controlled by Lean Burn computer.

Take a look at your carburetor for a ported vacuum tap, it sees vacuum above throttle plates, not manifold vacuum below throttle plates.

Take a look at the Lean Burn removal article here for better understanding of your situation.

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