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Breva 1200 fuel overflow

K

kingbee

Just got it firing!
Joined
Oct 19, 2010
Messages
5
Hello, Im new to this so I hope Im using the correct forum. The fueltank overflow breather on my Breva 1200 appears to be blocked. I have removed the tank to check if the pipe was nipped but all is ok. The breather is clear from the exit point back up to the Tee piece but from the Tee piece up over it seems to be blocked. I have tried blowing down it and threading a small wire but it seems to hit a dead end about 4 inches down. Overspilt fuel or water when it rains just sits in the well around the filler. Can anyone help. J.P.
 
kingbee said:
Hello, Im new to this so I hope Im using the correct forum. The fueltank overflow breather on my Breva 1200 appears to be blocked. I have removed the tank to check if the pipe was nipped but all is ok. The breather is clear from the exit point back up to the Tee piece but from the Tee piece up over it seems to be blocked. I have tried blowing down it and threading a small wire but it seems to hit a dead end about 4 inches down. Overspilt fuel or water when it rains just sits in the well around the filler. Can anyone help. J.P.
Click to expand...


Here or the Breva/Norge/Sport section would be even better. A search resulted in this thread. https://www.guzzitech.com/forum/163/5441.html
 
This happenend to my 1100 Breva a couple of years ago. The drain was so blocked that water that collected under the gas cap after washing the bike would migrate past the cap's rubber seal and get into the petrol. This resulted in an intermittent miss that would make the engine momentarily die, killing the lights and giving the impression that the problem was electrical.

You will need to remove the tank, and trace the origin of the two hoses that connect to the T-junction. One of the hoses acts as a breather for the tank internals, and the other as a drain for the area under the cap. If you blow into one of the hoses and then open the cap, if it clears than this is the breather hose. Remove the other hose (the one for the cap drain) and then carefully unscrew the brass spigot that is threaded into the tank itself. Clear the blockage in the spigot, and then reassemble.

In my case, Guzzibob provided an electric drill to clear the obstruction, it was so tough that a wire wouldn't make any headway. My bike had been in storage for a few months, so I assume that water and other contaminants had combined to form an solid mass. After a fresh tank of gas, the missing disappeared and never returned.
 
Thanks Dave, your description sounds exactly like my problem. I have ran the tank empty so I'll follow your instructions and see how I get on. Its great to know there's help out there if you know where to ask. J.P.
 
Just be a little careful when removing the brass spigot, it is threaded into the plastic tank which isn't the strongest of materials. I think when I revisit mine one, I'm gonna reinforce it with some JB Weld.
 
Probably everyone knows this by now but just in case - the left side hose nipple serves the filler cap drain and the right side one the tank breather. Viewed looking forwards of course. Care needs to be taken when refitting a removed tank that the breather hose isn't trapped between the tank and the airbox.
 
Thanks everyone. I followed your instructions and found the blockage in the threaded spiggot as described. It was a hard white deposit, maybe some chrystalised fuel additive. I cleared it out with a small needle file. Everything went ok apart from about an hour trying to disconnect the fuel connector. Eventually just as I was about to give up it seemed to fall apart. Even after studying it for a while I couldnt work out how to do it again so I just snapped it home again. Any advice for next time anyone.Thanks again J.P.
 
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