Gas from the bottom of Carb

BruceP · May 25, 2015

Well I am resurrecting my 97 ST1100. It has been parked while I have been enjoying other bikes. Well first thing the fuel pump was bad so I replaced it with a third party one. Now instead of no gas I have gas coming out of the bottom of the cards (lots). Some idiot (look in the mirror) put lock tight on the interior carb screws I believe. So before I get the drill out any suggestions? Float stuck, cracked or broken fuel line???
Bruce

the_gr8t_waldo · May 25, 2015

I would suggest that you first find out , exactly , where the fuel is coming from. you don't think that new fuel pump, could be over pressurizing things?

Brant · May 25, 2015

the_gr8t_waldo said:
I would suggest that you first find out , exactly , where the fuel is coming from. you don't think that new fuel pump, could be over pressurizing things?

+1........would be my first suspect/red flag!...........no leak prior...now leaking with no other mentioned change.....pretty much a given

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Mark · May 25, 2015

Don't ask me how I know this; but, a float could easily cause fuel to dump out of the drains... you might want to pull the tubes off the bottoms of the float drains and see which one is dumping fuel... if they all dump then at least you know you get to work on them all!

BruceP · May 25, 2015

The fuel pump was recommended by the list and I did not see any complaints. The bike has been parked for 10 years with no gas in the tank in a heated garage. I do not know how the fuel shut off works maybe vacuum? I can not get at the carbs to check anything till I can get the screws out of the top. (big job with the screws being seized) It would be wonderful if I could see if the floats are stuck.
Bruce

Mark · May 25, 2015

10 years! All I can say is *ouch*...

And, maybe... good luck!

Brant · May 25, 2015

BruceP said:
The fuel pump was recommended by the list and I did not see any complaints. The bike has been parked for 10 years with no gas in the tank in a heated garage. I do not know how the fuel shut off works maybe vacuum? I can not get at the carbs to check anything till I can get the screws out of the top. (big job with the screws being seized) It would be wonderful if I could see if the floats are stuck.
Bruce

UHhhh......screws out of what?

If your talking the diaphrams caps on top of carbs, that is NOT what you want to do. If carbs are leaking, the carb bank HAS to be removed to remove float bowls in order to check functioning of float needles, etc.

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gl12rr · May 26, 2015

Check to see witch carb is leaking, if it is just one have you tried LIGHTLY tapping the float bowl ? Sometimes the float needle will stick in the open position after prolonged storage. Also after awhile the neoprene/rubber tips on the float needle can dry up/shrink then it is rebuild time. My .02c Oh yeah never locktight the float bowl screws or the clutch/brake cap screws, oh well U figured that out yourself. Good luck

vinny · May 26, 2015

Are you talking about the screws that hold the airbox to the top of the carbs? The very least you should do is invest in some vessel screw drivers to assist in removing them. American phillips screw drivers are designed to slip. Vessels will grip much better. You can also get a vessel screw driver designed to work similar to a impact driver with a metal plate on the butt of the handle... you can tap on the handle to keep it from slipping as you apply greater torque.

Brant · May 27, 2015

vinny said:
Are you talking about the screws that hold the airbox to the top of the carbs? The very least you should do is invest in some vessel screw drivers to assist in removing them. American phillips screw drivers are designed to slip. Vessels will grip much better. You can also get a vessel screw driver designed to work similar to a impact driver with a metal plate on the butt of the handle... you can tap on the handle to keep it from slipping as you apply greater torque.

...better known as JIS(JapeneseIndustrialStandard) when going to purchase

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BruceP · May 27, 2015

The screws I am fighting with are the Air Chamber/ duct assembly. I have the Japan Screw driver but they are solid. I may have to remove the carb set and see if I can see something from the bottom.

Gas from the bottom of Carb

BruceP

the_gr8t_waldo

Brant

Mark

Gotta make tracks

BruceP

Mark

Gotta make tracks

Brant

gl12rr

vinny

Brant

BruceP