General Category > Quadrajet Carb Talk and Tips

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73 Z28:
I'd remove the carb and flip it upside down, then lay the base gasket over the carb and carefully inspect to make sure that the gasket is not blocking off the port (hole in baseplate) that allows vacuum to the distributor hook up location. If it is, you can simply drill a hole in the base gasket to uncover the blocked port and your good to go.

Paul

Cliff Ruggles:
The distributor port on the 207 carburetor is ported vacuum.  The source is not covered up by the base gasket as it is high in the drivers side primary bore above the throttle plate.  It should show full vacuum right off idle, but nothing at idle.....Cliff

73 Z28:

--- Quote from: Michael9040 on April 06, 2012, 07:36:31 AM ---OK......I plugged the holes in the manifold and adjusted the float (it was way too high).  That seemed to have cured all the problems.  But now I find that I have no vacuum at the port for the distributor.  I have 20in if I take a reading elsewhere on the manifold.  I assumed that I had a leak at the carb, but I can't find it.  What have I done wrong now?

--- End quote ---

Disregard my last post in this thread, I misread your post thinking that you were using a manifold vacuum port to your distrib instead of a ported vacuum source. Cliff is absolutly correct.

Paul

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