Gas fumes escaping tank???

[Zilla500]

I park my 1994 GS500 in my garage, and the garage always reeks of gas The petcock is at ON position, which means the gas flow to the carbs is stopped correct? Well the other day I had it parked outside, in the sun, and walked it so I can park it back in the garage. I noticed a hissing sound coming from the top of the gas tank as I moved the bike, sloshing the fuel in the tank. This means fumes were escaping correct? I couldn't tell if it was from the circumference of the filler hole, or just from the flip-up part that has key hole itself. I assume this is NOT normal? Do I have to replace the whole part, or can I buy gaskets to seal it better? Thanks!

[natedawg120]

The gas tanks on the GSs do have a vent and in a garage i would expect that it will smell a bit like gas.  However this is normal because if the tank didn't vent you would get vapor lock eventually.  I would look for puddles of gas and if you aren't leaking any the smell is normal.

[Affschnozel]

Ha ha I love it when it hisses    You don't need to replace the bike 

[fred]

The point of the vent is to prevent your tank from building up pressure when it is sitting in the sun. If it is releasing pressure when it is really hot, that is totally normal. The California models actually have a different design that vents the tank into a carbon canister to prevent the fumes from getting into the environment so the bike doesn't smell like gas when it is really hot out, even though it is still venting.

[Zilla500]

Thanks for the info folks. I may have to leave the bike out with a cover since I don't like the idea of gas fumes in my garage. It's not the smell itself that bothers me, but the flammability.

[fred]

Thanks for the info folks. I may have to leave the bike out with a cover since I don't like the idea of gas fumes in my garage. It's not the smell itself that bothers me, but the flammability.

Probably not enough to cause trouble. You can smell gas long before it becomes a fire hazard...

[XealotX]

How air tight is your garage?

My two car garage holds 2 cars (go figure...) a fully fueled gas generator, a lawnmower, 2 five gallon gas cans, and my 02 GS...barely...and I close the garage door every night. There are no noteworthy smells in the morning even though there are plenty of sources.

I'm thinking that either your bike is leaking like an excited puppy or your garage must be built like a bank vault.

[fred]

How air tight is your garage?

My two car garage holds 2 cars (go figure...) a fully fueled gas generator, a lawnmower, 2 five gallon gas cans, and my 02 GS...barely...and I close the garage door every night. There are no noteworthy smells in the morning even though there are plenty of sources.

I'm thinking that either your bike is leaking like an excited puppy or your garage must be built like a bank vault.

Decent point, you might want to check your carb floats. It is easy, and if they're stuck open you might be dumping a fair amount of gas into the airbox... Could also just have to do with how hot it is in your garage, if it is way over 100, you might be having more evaporation than others...