Question about kawasaki GT 750 Motorcycles

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Kawasaki GT750 Fuel dumping

I have a 1984 GT750 that has a fuel problem. The petcock is probably faulty but the fuel just runs straight out and drains the tank.
Why doesn't the float valve ( needle and seat ) stop the the fuel flow? can the fuel bypass the valve?
On one occasion the crankcase was flooded ( full) of petrol, not a good thing,I suspect it flooded the carbs and then ran into the cylinders and down passed the rings. Is this possible? Is this common?
I have a new petcock on the way but is there any thing else I can do to stop this flooding and waste of fuel?
Thanks
Wendle

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First clean out gas tank and put in line filter
on it then clean out float bowl and need
e and seat.restart ok

Posted on Feb 07, 2015

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Sounds like the float valve is stuck in the carby and allowing fuel to keep flowing.

Give the carby bowl a light tap with some wood to free up the float valve. You may have to pull the carby off and have a look if that doesn't help. Fuel cannot bypass the float valve in normal operation.

Posted on Jul 25, 2009

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