Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem
1977 Qjet coughs and sputters
Frank400:
A simple test would be to pull the power piston up (thru the vent) and see if the same thing happens. I'm pretty sure I read somewhere about how to fabricate such a hook/tool. Maybe it's in the Doug Roe book or a Delco Rochester service manual. Not that complicated.
stushug:
I don't understand how to do that.
77cruiser:
Piece of wire bend a hook on it & go down through the bowl vent.
stushug:
I assume I do this while the engine is running and work the throttle after lifting the piston?
stushug:
Today I went to try what you suggested Frank, and I think I found the problem. When I looked into the vent, I saw that the gasket between the carb body and the top has that hole completely closed off. Just to make sure, you meant the round vent just in front of the primaries that sticks up into the air cleaner, correct. Should that hole be blocked off? Maybe Mr. Barker made a mistake and placed the incorrect gasket?
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