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Old 08-28-2012, 04:05 PM   #6
Wrenchbender Ret
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Join Date: Oct 2005
Location: Overland Park, Ks.
Posts: 5,229
Re: Help!!!1968 6cyl w/New exhaust manifold and rebuilt carb. Runs like crap

When the choke is off the fast idle cam should not be contacting the throttle shaft lever. You should be able to adjust the idle speed with the speed screw or the selinoid that is in the photo.
I agree the manifold heat rizor will not cause this problem.
They could have the cam upside down. Sometimes the gasket between the fuel bowl & throttle body is not in correct or they could have usaed the wrong one, as 2 different gaskets come in the kit.
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