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69GMCLonghorn · 11-21-2013, 11:24 AM

The way the P/O set the timing was 8° with the vacuum advance connected. There was ZERO power. I set it at 8° with it disconnected (and plugged). Now it has a reasonable amount of power for what it is (or isn't). The idle adjustment doesn't seem screwed in very far at all, basically about where it should be. But it does make sense that if this was in too far, I'd start having port vacuum at idle. I'll do a little more research this weekend and see what other details I can come up with.

11-21-2013, 11:24 AM	#5
69GMCLonghorn Registered User Join Date: Dec 2006 Location: Porter Ranch, CA Posts: 978	Re: Too much Vacuum Advance The way the P/O set the timing was 8° with the vacuum advance connected. There was ZERO power. I set it at 8° with it disconnected (and plugged). Now it has a reasonable amount of power for what it is (or isn't). The idle adjustment doesn't seem screwed in very far at all, basically about where it should be. But it does make sense that if this was in too far, I'd start having port vacuum at idle. I'll do a little more research this weekend and see what other details I can come up with.