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Discussion Starter #1
After i ride for awhile 30 min or so , sometimes when i stop at a light i get this gas smell rising up with the heat . i also notice it in the garage when i get home.I cant find the point of oragine ,smells more to the front . I raised the tank looking for leaks ,none turned on the key to pressurize the fuel system nothing, started and let run awhile notta . Any body have this happen?? is this normal?/
 

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If you overfill the tank, the overfill tube can drain some of the fuel toward the bottom of the fairing. In some cases the charcoal canister can also get fuel in it from over filling, but in those cases you will have some hard starting problems.

-Fariborz
 

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I've been getting exactly the same gas smell with my '02 ST4s for over 8 months now! I too can't find a leak anywhere. I get the gas smells whether the tank is full to the brim or half empty! It's not coming from the charcoal cannister either, because I don't have one on my ST (it was removed years ago!).

I've just learned to live with it. I'll be getting a 48,000 mile service in a few weeks so I'll ask the shop to take a closer look at the fuel system. Maybe they can find something wrong somewhere.
 

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Don't have a gas smell with my '02 ST4s. Only time I've ever smelled gas with a bike was when it was overfilled or the gas cap wasn't tight... net, rarely.

And separately... congrats on the 48K miles Turbo. Very encouraging, very excellent.
 

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One other thing to check is the black rubber gromet on the front of the filler well. When you open the gas cap, there should be a rubber gromet sealing against a very small hole on the cap. Once sealed any gas fumes should go from the cap to the charcoal canister.

If the rubber gromet is not there or is not seating properly it can cause the vapors to escape to the area around the cap where you can smell it.

-Fariborz
 

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my 04' would actually leak. had dealer check it. turned out the cap needs to be pushed in unitl it "clicks".


Doh, monster never did this..
 

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I understand. My 2002 4s is smelling and making a suction sound at the cap. I removed the cap and completely disassembled it to confirm all vent channels were clear and could find no problems. Next was a raise of the tank and all hoses seemed tight and healthy also no pinches. WTF - it doesn't seem dangerous but it is smelly.
 

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Discussion Starter #9
well im glad to know its not just mine does seem od . would never exspect that from this bike . thanks for the info im going to pull the air box off to get a better look at the injectors and the lines with the crimp clamps, I have had problems with them on another bike.
 
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