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Discussion Starter · #1 ·
so there are these two bungs underneath the seat area in the middle of the bike. below and behind where the batt sits. one had a hose coming off of it and the other end of the hose is just kinda hanging out. the bung furthest back (about 1/2 inch back) leaks gas whenever i turn the fuel on. it just started doing this last night after a 70 mile cruise. and i cant find a nearby hose that looks like it slipped off. i have consulted my repair Manuel with no luch. i am such a new i honestly dont know what i should be looking for. any help would be great. thank you. :D
 

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I'm not sure about the "bung" you've mentioned but from the location your describing it sounds like the overflow from the carbs. Track any hoses back to their origination and you'll have a better ideal of what is going on.
 

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Vintage bike addict
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Take a plastic screwdriver handle and tapp the carbs. It's probably a stuck float.
 

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Discussion Starter · #5 ·
you guys rock. i figured out that it was all 4 carbs overflowing so the chances that all 4 floats were stuck was impossible. so i traced it back even further and found that instead of the fuel being on it was in pri position. im such an idiot, i was about to take the carbs off because i was too dumb to look at the big picture. well. enough self deprecation. thanks for the help guys. i hope to someday return the favor.
 

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Scootter_man
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Hmm, prime position shouldn't cause a overflow even if its placed in that position. On my Zephyr its just used to fill the bowl in the spring after I drain them out for storage during winter. In the position gas line dont need vacuum assistance to open to allow flow. Still sure sounds like sticky or bad float needles to me.

*Addition*.. Prime could allow a little overfill if left on constant (overnight such as). Not all float needles do perfectly seal.
 

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Discussion Starter · #8 ·
Hmm, prime position shouldn't cause a overflow even if its placed in that position. On my Zephyr its just used to fill the bowl in the spring after I drain them out for storage during winter. In the position gas line dont need vacuum assistance to open to allow flow. Still sure sounds like sticky or bad float needles to me.

*Addition*.. Prime could allow a little overfill if left on constant (overnight such as). Not all float needles do perfectly seal.
i'll check it out.
 

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Discussion Starter · #9 ·
ok. to its the inside carb on the left side. i tried tapping it with a screwdriver handle but wasn't able to achieve much "tappage". it only drips. but just for ****s i turned the choke on and it flows. so yeah. is there anything else i might be able to do without removing it?
 

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Hmm, prime position shouldn't cause a overflow even if its placed in that position.
I have found that even though they shouldn't, sometimes they do. My suspicion, is that when we moved to vacuum operated petcocks, the manufacturers got casual on the fit and finish of the valve needles and seats in the carbs, since there wasn't constant gas pressure on them anymore. My old 400f? Never leaked. My GPz? Never leave it on Prime.
 

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Glad you got the leak straightened out. I've noticed the same thing Stormdragon mentioned as well but, just to be on the safe side, you might run a bit of Seafoam through the gas and see if it helps. Could just be a little crud build up on the float needle.
 
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