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Discussion Starter · #1 ·
Does anybody else have fuel come out the vent on their cap? I tried a cap off a different bike with the same result.
 

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Does anybody else have fuel come out the vent on their cap? I tried a cap off a different bike with the same result.






No. On occasion I may smell a fuel smell but I've never seen actual gasoline leak from my cap.
 

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Discussion Starter · #4 ·
Still seems to do it if I leave a few inches of space. I was sure it was the cap. Mounting surface where it meets the tank looks paintless, but sealable.
 

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Is it possible that the rubber gasket on the cap is worn out?




How is your rubber? is it tight, hard and cracked. Or soft like it should be.
 

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Does it look like the air holes in your cap have been enlarged?



And when does it leak? During riding. On the centerstand. On the kickstand or all 3.



Is your front end lowered or front end soggy?
 

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Discussion Starter · #10 ·
Judging by the dried gas streak from front to back and from the cap down the left side, I'd say both riding and on the side stand when the tank is full. Not sure about the holes, but have tried 3 caps. Maybe I am just overfilling
 

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Ok well there's our answer.



How do you expect a cap with holes in it to hold the fluid in when if you took the cap off gas would pour out of the hole. That's a normal thing



The while riding part is the one that gets me. Sure a splash here and a splash there but enough to run out the tank is odd.
 

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Well I cant really speak about the gl but with my custom I normally fill the tank till I get to the bottom end of the fill hole. But when I filled up the supertank the first time I had to fill it less because there is a bigger angle.





But I can tell you I won't put the bike away right after filling it up. I usually run 3-10 miles. Then it won't leak out.
 

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I do as Blindstitch does, I fill only to the bottom ring of the fill hole. I also try to time my fillups to ride off a little fuel before parking. BTW, mine is a Custom with a Deluxe tank.
 

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Discussion Starter · #15 ·
I don't even come up to that bottom ring and I still get this. I'll have to keep digging into it.
 

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Are you sure the gas is coming out the vent hole? My cap was leaking, but it was from below the seal. The tank was dented at one time, so the top of the fuel opening wasn't flat, plus there were a couple of small dents that would let fuel out when the tank built up a little pressure. I took a small piece of broken glass and laid it on the opening. It rocked around so I could tell it wasn't flat. I bent it from underneath until it was as flat as I could get it. Then I sanded it flat with a sanding disc. It still seeps a little, but nothing like it was before. At least now it doesn't run down the side of the tank. A crotch fire would not be fun.
 

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I always overfill mine and it NEVER comes through the gas cap. I wonder if there is a small hole somewhere along your rim that is hard to see...?
 
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