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Discussion Starter · #1 ·
I just picked up a 1990 GL1500SE that the owner could not get running after it had not run for over 4 years. It was a easy trouble shoot and got it running but fuel is flowing out of the Air Vent Control Valve. I am planning on pulling the carbs but does anyone know what is causing this?
 

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Discussion Starter · #6 ·
Thanks All

Thanks for all your input, it has got me going in a direction I was feeling was the issue but needed to tap some experience from you all. Much appreciated! When it gets down to it a carb is a carb with the same basics, sometimes all the hoses and California emissions junk cause a person to out think the issue.

I am quite sure what I have going is a stuck float or needle valve keeping the float from doing its job. It is interesting to me that if a float or needle valve sticks that the fuel would be expelled from a valve located on the side of the bike and run all over hot exhaust pipes! Yikes! The amount of fuel that flows out of the side of the Air vent control valve is considerable (1 gal. per 7-8 min.) and seems also to point to an open (stuck) needle valve. I am going to try to shake loose the valve with a medium frequency vibration on the side of the carbs, if that fails then I will need to remove them and go through them which is probably the best thing anyway.
 

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Discussion Starter · #7 ·
Problem Solved!

A few gentle taps on the side of the carbs upper flange with a small hammer shook the needles loose. The gas stopped flowing out of the air vent control almost immediately. :)
 
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