50Hp 1973 carb leaking air question

FillupD

Petty Officer 1st Class
Joined
Jul 5, 2007
Messages
261
When I close the choke on the lower carb the motor dies instantly. When I close the choke on the upper carb it starts to run rough and dies after about 4-5 seconds.

Is the lower carb more responsive? I would lean towards a gasket leak or something in the top carb? I'm not sure if this is normal?
Ideas? Opinions? Expert advice?
Thanks Phil
 
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