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Old 12-11-2018, 04:14 PM   #13
Senior Member
Join Date: Mar 2017
Location: Old Lyme Connecticut
Posts: 996
Default Re: Engine runs rough unles GAV is open 3/4 turn

The town we live in is at about sea level. Our car runs great at 1/4 to 1/2 turn open.

We use to live in up-state New York, at about 1,200 feet elevation. GAV needed to be at 3/4 turn open.

New Zenith carburetor.

As stated in other comments, the GAV is adjustable for a reason. Enjoy.
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