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Home » Public Forums » GMCnet » quadrajet valve seat possible extra gasket?
quadrajet valve seat possible extra gasket? [message #245264] Wed, 26 March 2014 20:39 Go to previous message
Tilerpep is currently offline  Tilerpep   United States
Messages: 404
Registered: June 2013
Location: Raleigh, NC
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In searching old forum posts, someone said there are sometimes old gaskets left under the carb float valve seat at the carb body.

For visible confirmation before I rip on this thing too hard:

https://dl.dropboxusercontent.com/u/2984589/valve%20seat%20gasket1.JPG

https://dl.dropboxusercontent.com/u/2984589/valveseatgasket2.JPG

There is a dark ring (pressed in?) above the cast threads which makes the contact point nearly level with the cast top edge. It looks fine, but if it is an old seal, or seals, I would be open to tips to remove them, as they have not wanted to come out with my current level of effort with a pick.

Symptoms that I am trying to resolve point to stuck or maladjusted float: bad mpg (5), visible gas just dripping and swirling above butterflies in main venture at all rpms.

I've checked timing, vacuum and for vacuum leaks several ways, but open to broader suggestions in addition to confirmation/denial that this seat gasket bore is atypical.

Thanks


1975 Glenbrook, 1978 Royale rear bath Raleigh, NC
 
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