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post #5 of (permalink) Old 03-04-2004, 10:15 AM
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Re: distributer vaccuum advance question

I used to have a weber carburator on my CJ7 4.2L. I tried both ported and manifold vacuum.

I used manifold vacuum because it gave me better overall performance and proper advance when I needed it. I used the port just below the carburator baseplate on the drivers side.

I would suggest you try both, and see which gives you better idling, power, driveability, etc. Then leave it on whatever one is better.
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