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Old 10-29-2018, 08:26 PM   #42
Mike C
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Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,714
Re: '69 C10 327 SBC Off Idle Stumble / Misfire Help - I feel like I've tried EVERYTHI

Something is drastically wrong with your carb if you can bottom out or remove the idle mixture screws with ZERO net change.

If you have not bought a book on tuning an AFB/Edelbrock carb, I'd be looking at Amazon. Something is really wrong with yours. I have a 750 cfm Edelbrock on my boat and a 600 Carter on my CJ5 and they don't behave that way at all.
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