05-17-2025, 11:10 AM

helmerrock helmerrock is offline

Senior Chief

Join Date: Jun 2004

Posts: 277

Quadrajet fast idle

I’m running a 69 Quadrajet with divorced choke. Runs well. For a cold start, I hit throttle once to set choke then start. Starts right up and runs on fast idle. Problem is that it doesn’t stay on fast idle very long so after a short time if I hit throttle, the fast idle drops off. The choke spring is still holding choke plate closed until it hears up. I need to figure out how to adjust to keep the fast idle cam engaged a bit longer during warm up

Any ideas? Thanks

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