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Checking for stuck power valve [message #325790] Mon, 06 November 2017 08:35 Go to next message
Jim Wagner is currently offline  Jim Wagner   United States
Messages: 339
Registered: February 2004
Location: Brook Park, Oh
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Senior Member
I am going to rebuild my carb and thought I would take a photo of the proper location to check for a stuck power valve. Carefully take a straw (screw driver) and press down through this tube. You will contact the top of the power valve. The valve should push down about 3/16" then spring back up if it is working correctly. If the valve is stuck down you will have a loss of power. We ran into this problem a few years ago.

Jim Wagner
Brook Park, oh
76 GMC500
71 Vega355
69 Vette383
Re: Checking for stuck power valve [message #325791 is a reply to message #325790] Mon, 06 November 2017 08:37 Go to previous message
Jim Wagner is currently offline  Jim Wagner   United States
Messages: 339
Registered: February 2004
Location: Brook Park, Oh
Karma: 0
Senior Member
Forgot photo


http://www.gmcmhphotos.com/photos/mechanical/p63917-checking-carb.html

Jim
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