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Old 07-06-2016, 10:25 PM   #1
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Join Date: Oct 2015
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no throttle response Chevy 366 Holley 4 barrel

I have a 1987 Chevy bus with a 366 cid and 4 barrel holley carb. Currently the bus will idle, but there is no throttle response. The throttle is stiff, so I believe the redundant safety spring is tripped. Does anyone have a picture and instructions for resetting? I can manually open the secondary and engine revs up. Tomorrow, I will check the secondary diaphragm. I was told that it could be a worn out base plate too. Any thoughts? Am I on the right track? What else should I check?
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