vac leak or ? - 460 Ford Forum
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post #1 of 3 (permalink) Old 10-13-2013, 05:14 AM Thread Starter
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vac leak or ?

I have a dom that the idle goes up when I turn the a/r screws vin. Last 3/4 turn. It only does it when its hot. It started doing this on my way back to the pits. Idling at 1800 rpm. When I turn the idle down hot and let it cool down I have to turn idle back up. Already spray starting fluid around carb base,int and metering blocks but to no avail no change. Pulled caeb cleaned and blew out. Changed bowl, metering block and carb base gaskets. Any ideas are greatly appreciated. By cool down I mean just down to 145-150 ish.

1972 maverick 3200lbs street car. Steel and glass.
Jon kaase 598. [email protected] 160

Last edited by 557MAV; 10-13-2013 at 02:03 PM.
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post #2 of 3 (permalink) Old 10-14-2013, 07:16 AM
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Are the secondaries hanging slightly open?

If you're not living on the edge you're taking up too much space!
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post #3 of 3 (permalink) Old 10-16-2013, 10:45 AM Thread Starter
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No. I checked for that. Iv never had the idle rise unless a vac leak. When its running and you cover carb with hands it dies instantly. Plugs look good.

1972 maverick 3200lbs street car. Steel and glass.
Jon kaase 598. [email protected] 160
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