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Old 02-13-2008, 02:14 AM
75CamaroLT
 
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carb whistling

i have a barry grant road demon 625 carb and at high rpm it will start to whistle like it is spooling up like a turbo. sounds like a vacuum leak does anyone know what it might be and if so what i can do to fix it. and i know its not a vaccum leak from anywhere else because i change the intake gasket and carb base gasket and i also checked all vacuum fittings and everything is fine.

Thanks- Juan

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Old 02-13-2008, 06:52 AM
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Are yoy running an open element air filter?

Shane
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Old 02-13-2008, 09:29 AM
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Dirty air bleeds?
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Old 02-13-2008, 01:52 PM
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have you tired cleaning the carb with some carb cleaner and hold it at 2500 rpm?
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Old 02-13-2008, 02:37 PM
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I do have an open air cleaner. but i've always had it and it just started doing it. and no i haven't tried to clean it with carb cleaner
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Old 07-03-2009, 03:09 PM
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Carb Whistling Solution

After searching the forums and the internet, calling Holley and still no luck fixing a whistling sound coming from the bowls (specifically when a load was placed on), I finally fixed the issue. The carb spacer I was using was an open plenum aluminum. I switched to a 4 hole spacer and away went the whistle. Also added a noticeable low end boost as well.
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