Quote:
Originally Posted by Eddie H.
First off, it sounds like your idle mixture is too rich.
If you're idling at 1000 RPM, you could be pulling fuel from the transition circuit\ primary jets also. Back the idle down to 650-700rpm.
To adjust the idle mixture for best emissions, turn each screw in until the idle starts to get rough, back out until it smooths out, then turn each mixture screw back in very slowly until the rpm just starts to drop. For the emission test, you might want to go another 1/8 to 1/4 inch farther in past that point.
If you have a vacuum spark advance distributor, unhooking the vacuum line and plugging it during the test may also help.
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Idle was 700 on the first test. I had read that increasing it might help, so I turned it up to 1000 for the second test.
Thanks for the tips, I'll try that.