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GS750 Carbs flooded

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G

Guest

Guest
A have rebuild a GS750 .
Did the Carbs removed an ultrasonic cleaned.
New O-Rings from Robert Barr, new needle , new valve seat, new gasket.
But now I'm guessing why those carbs still (sometimes) keeping flooded.
Today nr 2,3 and 4 spill all the gasoline on the floor.
Yesterday none, the the day before only nr 4.

I've adjust all the carbs on float height : 3mm below gasket. (Not on the cycle , but loose , one by one in the vice.)
I'm lost....

Peter
 
Could be your petcock is not working properly, even if floats and needles are new they cant hold back that much gas. Could be floats might be catching on the float bowl gaskets, if they're aftermarket sometimes they're just a little big. I had that happen once. Disconnect your fuel line to carbs. from petcock and hook up spare line to petcock and put other end in to a container, leave overnight or longer and see if any gas is in container. Of course have petcock set to "on".
 
They still brim over when the machine is running. ( I don't have yet a fuel cock, i use a test container with a valve.).
I thought that to, catching the gaskets, butt there is plenty room to operate.
If the petcock is fully functional , I don't know because i first want to clean the petrol tank.
 
PeterBoomhut said:
They still brim over when the machine is running. ( I don't have yet a fuel cock, i use a test container with a valve.).
I thought that to, catching the gaskets, butt there is plenty room to operate.
If the petcock is fully functional , I don't know because i first want to clean the petrol tank.
Click to expand...

They still over flow while running? That says to me your float levels are all wrong. One other thing how high do you have that test container? It shouldn't be much higher then where the petcock would sit with the tank on the bike AND how big a container is it? It only needs to be a couple quarts.
 
Last edited:
Oops, the test container which is a about 1 litre, have a I hooked on 1 meter above the vehicle.
But by testing a Gs1000 and a GS1100 this issue didn't appear .
 
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