Stuck GAV
 

I just re-installed my zenith carburetor (new from Snyder last year) after replacing the exhaust and intake manifolds. The GAV/choke adjustment rod will now not turn. It appears to be suck at the carburetor. What have I done?

Re: Stuck GAV
 

Give it some light lube. Some are quite tight.

Re: Stuck GAV
 

That seems to have worked.....

Re: Stuck GAV
 

The "fingers" can be adjusted. I used an ice pick pushed down into where the GAV needle fits to bend slightly the fingers and the "c-clip."

Alternatively you can remove the c-clip and try that. Or replace the c-clip with a small o-ring.

Careful with expanding the fingers - it's possible to "break" one of the fingers off - although in my case it didn't affect the function, and actually served to make the GAV needle turn easier. (I haven't repaired/replaced it yet as there is no need.)

Joe K

Re: Stuck GAV
 

sorted. but for future ref add... rare but the thermal contraction sometimes trap the needle if already screwed in tight to port. And I have had report of a nick on threads making it v stiff to turn