GSF1200 carbs fuel in airbox

[GSX750Inazuma]

buggery bollocks, i have overhauled the fuel tap on my gsf1200, and replaced the o-rings float valves with a kit, (all 4), set the float heights,
bike runs, but struggles occasionally, anyway opened the airbox drain and about a rattle can lid full of fuel, (might be less) pished out,

anyone any ideas of what i may have missed or forgotten,

Thanks
 

[GSX750Inazuma]

fuel tap seems fine, fuel is overfilling when riding, not when stood, oil level looks normal, but will drop the oil, for fresh oil, (again) fuel tap in the normal/on position.

 

 

[Captain Chaos]

obviously one or more of the float needles is letting fuel through with the engine running.

Have you used original Suzuki needles and O-rings? Because in this case really buy cheap = buy twice.

[GSX750Inazuma]

took the tank off this morning, and the fuel tap is letting fuel flow in the run/on position, so need to revisit that.

Airbox was dry this morning, so no fuel into it with bike off, overnight (tank full, always bloody is when you need to remove it...   )

would this cause fuel in the airbox? if the float valves and float heights were working correctly? 

don't want to strip carbs down if the tap is the fault, could it be something else?

will rig up auxilary tank tonight and run bike, then check airbox

[GSX750Inazuma]

removed carbs this evening, drained fuel tank,

fitted an auxilary tank (carb balancing) to carbs,(suspended higher than workbench) level stayed constant in aux tank, carbs propped upright, no dribbles or leaks out of anywhere, so float valves, and float heights ok?

will tackle fuel tap, as i know it to be faulty.

 

[GSX750Inazuma]

can carbs overfill with the engine running? which would cause excess fuel to enter the airbox?

 

[Captain Chaos]

yes.

[GSX750Inazuma]

27 minutes ago, Captain Chaos said:

yes.

thanks Captain Chaos, so can I prevent it?, and if so, how?   

I've managed to sort out the petcock, so thats now working as it should,

 

 

[Captain Chaos]

make sure the float needles and O-rings are not leaking, floats are moving freely and fuel is clean, should be OK then.

[GSX750Inazuma]

22 minutes ago, Captain Chaos said:

make sure the float needles and O-rings are not leaking, floats are moving freely and fuel is clean, should be OK then.

Thanks CC

 

[GSX750Inazuma]

sumps have been opened, floats checked, adjusted, float valves checked, float valve seats removed, checked and re-inserted, carbs refitted to bike, will test tonight.

[Oilyspanner]

Check your oil level too, you could have petrol in it, from when the tap and float needles weren't working properly.

[GSX750Inazuma]

3 hours ago, Oilyspanner said:

Check your oil level too, you could have petrol in it, from when the tap and float needles weren't working properly.

already got new oil and filter to replace, oil level is halfway up the window, but for £40, better safe

Thanks Oily

Edited May 5, 2016 by GSX750Inazuma
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