Total Motorcycle Community Forums

Hello,
so here is the story. I bought a 92 gsf400 for 580.00 great deal. Well not so much. I got someone to take a look at it and it turned otu that the Moron (previous owner) tried to drill out the carbs to get more juice in the bike. (its a 400 for petes sake). Well to make a long story short I bought new carbs had this guy re built them and clean out all of the fuel that had turned to varnish. I then had a ton of other problems with the bike and now when I though all was well it seems that I have one last hurdle to jump. everyting is fine the bike will run on carb cleaner and has spark and all is good except that the fuel keeps pouring out of the carbs. SO WHAT IS HAPPENING IS THAT I HOOK UP THE TANK AND THE VACUME HOSE AND WHEN i CRANK AND FUEL STARTS TO GET PULLED INTO THE CARB IS IS PISSING OUT. I WAS TOLD THAT IT WAS THE SEAL ON THE TEE JUNCTION. I am reffering to the piece that the fuel line conects to that goes into the center two carbs. I replaced this piece but it seems that this was not it. It seems that the fuel is coming out of some other place. Here is the problem. I can't tell where the fuel is actually leaking from and is runs anlong the carb body so it is hard as hell to tell when the think is hooked up and pulling, which it has to be to make it leak. It might be coming from some nipple on the bottom of one of the carbs but again I am not sure. What soudl I do. I am on the verg of stopping riding before I ever got started. Any help would be appreciated.

Get yourself a decent manual (Haynes/Clymer) for your bike and very carefully follow the instructions for removing/disassembling the carbs.

Take it slowly and carefully, making note of every piece that you remove/inspect. Make sure that the floats are set at the proper height and are not letting the bowls get too full and causing fuel to leak out the vent line.

Your other option is to take the bike to a local reputable bike mechanic and have him look at it. This will cost you more money, but......

At the very least, get yourself a good manual. It will help you out with any other issues that may crop up in the future when you do get riding.

I agree. That's a common symptom of the floats being set too high. You'll have to pull 'em apart and reset them according to the manual specs.

here is my story--go to http://alpha-sports.com/suzuki_parts.htm
look up your gsf400--click on folder on left--index will come up.choose carburetor--look at diagram--illustration #33 is small o ring on float valve
inlet.if float height is ok you will need this o ring as it is the only thing keeping float bowl from overfilling.they get hard and leak.you will need float bowl gasket also.both these items are about $10 for each carb.you dont have to buy the whole carb kit as suzuki sells these parts separately.
be careful when handling float assembly as they are tender.

I do have a manual and I believe that the floats are fine. The fuel is deffinatley no leaking from the vent line.

Blake-

Glad to see you found the site. I hope it helps. It could hurt to check the floats especially if you can't see where the fuel is coming from. Is it leaking from higher up on the carbs?

It is not leaking from high up but seems to be leaking from the T junction conector where the fuel line and carbs meet. I am thinking that it is a seal or something but shich one. I might try and get a long piece of fuel and vacume hose and hook up the tank hih above the bike so that I can see in and find the spot at which the fuel is coming out of. I am just so fed up with this biek that I am not motivated to do anything with it.

Mundane fact of life......
You have to identify the source accurately before you can fix any leak.