Leaks gas while on kickstand

[AJ]

The leaking could be worse on the side stand because the float is angled with respect to the fuel surface, putting torque on the float pivot point (greater lift on the left float half than the right one). It's probably small considering the small lean angle, but if the fuel valve seats and needles are a little worn, the torque could cause enough stiction in the float pivot to keep it from pressing hard enough on the needle to stop fuel valve.

 

[koolaid_kid]

So, that raises the question: What angle is the bike at? I ask because my GPz has an insane lean angle. It won't even run on the sidestand, so I have to turn off the engine, put it on the sidestand, dismount, and put it on the centerstand. Pretty annoying, because the GS has a much smaller lean angle and will run on the sidestand.

 

[AJ]

So, that raises the question: What angle is the bike at? I ask because my GPz has an insane lean angle. It won't even run on the sidestand, so I have to turn off the engine, put it on the sidestand, dismount, and put it on the centerstand. Pretty annoying, because the GS has a much smaller lean angle and will run on the sidestand.

My Busa also leans way too far. The kickstand has a bend in it and I need to find a press to straighten it a little. Either that or I'm going to weld an extension onto the end.

My GS1100 barely leans at all. Makes it hard to park if the road is slanted.

 

[koolaid_kid]

My GS as well.. I have the GPz on the sidestand running a test to see if they leak. I rebuilt them myself and they have been perfection until now. We'll see.

 

[System9]

My gs leans waaay further on the side stand than my son's Honda. In fact I was questioning that lean angle, seems to lean too far.
I didnt get any replies on whether or not my needle jet was put in backwards by the previous owner, can anyone verify this from my photo? I'm not even sure if this photo is showing up, but here it is again.

 

[mmain1]

...I didnt get any replies on whether or not my needle jet was put in backwards by the previous owner, can anyone verify this from my photo? I'm not even sure if this photo is showing up, but here it is again.

That is definitely wrong. Check out the rebuild guide from BassCliff's site: http://members.dslextreme.com/users/cbsaunders/gs/gs450_carb_cleaning_guide.pdf and you'll see pictures of what it should look like.

In fact, print a copy of it while you've got it open and then follow it STEP-BY-STEP including the ordering new o-rings which you definitely need.

 

[tucker8541]

Not sure if you found your leak problem but I just recently had to fix one I had. I took off the carbs and noticed my #4 carb float was lower than the others. I took off the floats and found gas in it, small hole. A little soldier and checked for leaks, no leaks (Make sure to test it). Than checked all the floats to make sure they where at the right height. I set them at the highest OEM recommended setting. (Higher meaning shutting them off faster) Slapped them all on and wammo! No leaks. Try it, simple fix if that is the problem.

If that doesn't work, if you have a vacuum type petcock, pull off the vacuum line off the carb that is connected to the second small petcock nipple. Give it a good suck (Not a joke!), if you get gas from the tank. You have a bad petcock. Make sure the petcock is on the "On" position.

Hope that helps

 

[dude]

I have a GS850G leaking gas

I have a GS850G leaking gas

I have a similare problem with my GS850G It seems to be leaking gas as it sits on side stand.I just purchased it ,when i first purchased it I noticed the smell of gas comming from it, the guy I purchased it from said that he thought it was the needle jet but he was not sure.He also told me that the battery would lose charge after about a week.When I first got it he had to jump start it from a 12 volt car battery.It did staret up and sounded good.I had him ride it to my house which was about 13 miles so I could check it out as he was riding it and everything was good.I have it in my garage and I could smell gas really bad so I put it out side for a couple of days .I then started it up and took it for a cruse it ran just fine,but now the otherday i tryed to start it up and it will not start.I put the battery on a trickle charger to charge it up all of thr way,but I still cant get it started does any on have any suggestions on what may be causeing this problem.Thanks

 

[old_skool]

You may be overlooking the simple explanation for leaking on the side stand and coming from the airbox....it may be leaking ALL the time, just runs back to the airbox due to the angle of the bike on the sidestand, centerstand it may be filling your crankcase full of fuel. Check your oil with a stick for fuel, smell it or try and see how easy it lights on fire.....the stick!!

 

[Killer2600]

You may be overlooking the simple explanation for leaking on the side stand and coming from the airbox....it may be leaking ALL the time, just runs back to the airbox due to the angle of the bike on the sidestand, centerstand it may be filling your crankcase full of fuel. Check your oil with a stick for fuel, smell it or try and see how easy it lights on fire.....the stick!!

Damnit, I didn't finish reading before.....

 

[old_skool]

sorry, thought I'd read it all, must overlooked the obvious.


ah, post #5, we all make mistakes, only trying to help

 

[robertbarr]

I didnt get any replies on whether or not my needle jet was put in backwards by the previous owner, can anyone verify this from my photo? I'm not even sure if this photo is showing up, but here it is again.

It's not so much that anything is backward or upside down; it's just that the visible portion of the jet is supposed to be secured to the carb body, via an interference fit between the bore and that little O-ring you can see.

I can't find my 450 guinea pig right now, but that jet should require some fairly substantial force to insert upward into the carb body. That's what holds it in.

There shouldn't be any friction as it sits in the bowl cavity there -- if you tip that bowl, the jet should fall out.

The O-ring on there is like the three bears story; it has to be jusssst right. Close isn't good enough on that one.

 

[System9]

Problem solved

Problem solved

I recently purchased an old set of carbs from ebay. Today I noticed that my original floats in the carb that was leaking were convex, as if someone purposely pinched them really hard. And even though they were still air tight, and measured the same as the float in the other carb, I guess shape has alot to do with it. I thought they were made this way.
I swapped it for one of the floats from my ebay carbs (after cleaning them) and there was absolutely no leak. Even at the ludicrous angle my bike is at while on the side stand.