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Discussion Starter · #1 ·
Just picked up my first Vette... 1971 small block,love it...
All is great but when driving along and I press on the brakes, my idle wants to drop below 500. I have to feather the gas a bit to get it back to 1100, 1200.
I played with the air idle mix on the holly 4 barrel and even disconnected the vacuum from the power brakes but still does it...
Major frustration

Any ideas out there?
Thanks
 

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I would check the float level, sounds like it's low. I would also inspect the fuel filter and make sure you have enough fuel flow and pressure, but most likely with a Holley it's a float out of adjustment, very common and easy to fix. Wouldn't hurt to pull the needle and seat out to inspect and clean accordingly.

Welcome to SV :thumbsup3:
 
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