Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem

hard start hot and white vapor out top of eddy #1904

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von:
If the needle and seat hold vacuum for an extended time then them and the gasket area are probably good. If the float is new then it's likely good too. Are you using the little clip that ties the needle and float together? Those are often installed wrong and can cause problems. Many people including me leave them out entirely. I think Cliff does too.

Shark Racer:
The clip is a good thing to check - if it's installed wrong it can leave the needle not well seated in the seat.

It should be around the half-cicrcle part of the float, toward the float well, NOT in either of the holes. Those holes were added to trick us. :)

One of these days I'll get a better photo, but you can kind of make it out here:

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