Loads Up at Idle and After Shutting Off - The 1947 - Present Chevrolet & GMC Truck Message Board Network

67L30WGN · 02-19-2008, 04:11 PM

Stock '72 350 and quadrajet. Sometimes, not always, the engine loads up at idle/off-idle causing it to run rough and sometimes, not always, it loads up after I shut the engine off and go to restart it (even if it was running smoothly when shut off), resulting in a big cloud of smoke. She runs smooth as can be on the highway.

I'm thinking either there is dirt in the bowl causing the needle not to seat everytime, or the float is starting to float a little lower.

What are your thoughts? Time to overhaul the carb?

02-19-2008, 04:11 PM	#1
67L30WGN Registered User Join Date: Dec 2007 Location: Burlingame, CA Posts: 96	Loads Up at Idle and After Shutting Off Stock '72 350 and quadrajet. Sometimes, not always, the engine loads up at idle/off-idle causing it to run rough and sometimes, not always, it loads up after I shut the engine off and go to restart it (even if it was running smoothly when shut off), resulting in a big cloud of smoke. She runs smooth as can be on the highway. I'm thinking either there is dirt in the bowl causing the needle not to seat everytime, or the float is starting to float a little lower. What are your thoughts? Time to overhaul the carb? __________________ 1972 Cheyenne Super 10 LWB 1965 Nova SS Evening Orchid 1967 Nova Wagon Factory Disc (1 of 565), 327/PG 1964 Ford Fairlane 500 HT 1962 Nash Metropolitan Convertible (Wife's car)

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