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So, I've seen the posts on this but I couldn't find an answer to my question. I replaced the battery on the 04 1150r and when I took the tank off I saw the dealership I was using, instead of reconnecting the charcoal and drainage lines, zip tied them to the frame. posting.php?mode=post&f=2# I reconnected them but maybe did it wrong. The one line had build up gunk on the end of it (probably gas with dirt that got stuck) and the other one was clean. The line with the gunk I cleaned and then connected to the charcoal line and the clean line I put with the drainage. I'm going to try the fishing line thing from the little hole where I put gas in gas tank to figure out which line is the drainage from the tank. Does the tank drainage line connect to the tube that sends it off under the footpeg or does the tank drainage line connect to the charcoal canister line? Thanks for any help this was my first time taking the tank off! posting.php?mode=post&f=2#

To reply to my own thread... hahaha... I think I will probably just remove the canister. I guess the dealership was silently doing me a favor not reconnecting it! There is a slight smell of gasoline on the right side of the bike coming from the tube after a good ride but that's it. So, if that's all I have to worry about why have the canister on the bike taking up weight?

One hose coming from the tank drains the fuel neck (the hole you mentioned) to the right side near the footage. It is meant to drain rain water from outside the tank.

Then there is another line coming from the tank that vents the inside of the tank, through the charcoal canister. If you're smelling gas and there was gunk at the end of one of the hoses, you may have that line leaking inside the tank. This hose allows air to enter the tank (through an internal valve) to replace the fuel as it burns. It also allows for expansion of the fuel.

The other thing to know is that all the in-tank hoses get brittle and can leak. When one of the high-pressure, in-tank hoses leaks, it will work for a long while and then fail suddenly. Here's what happened to my '04RT: http://bmwsporttouring.com/ubbthreads/u ... 530&page=1

Interesting. A few weeks ago when I was on the expressway, the bike felt like it cut fuel because there was a total power loss for about a second then it surged and rode normally. This happened when I was rolling on the throttle to change lanes. Maybe there is a problem with the fuel lines? The reason I changed the battery is the bike wasn't starting correctly when it was warm after long rides. Last week, I was waiting for a tow truck for over an hour after it wouldn't start then I just tried to fire it up and it started. So that's why I changed the battery.

There are several possibilities for the highway cutout but from the disconnected dripping hose symptom you should check the fuel system.

A canister flooded with fuel or water has two ways to knock your bike out.

1) If flooded with fuel, when the canister purge valve opens (left side frame, mid seat) raw fuel can be drawn in to the throttle bodies and stall the bike.

2) if flooded with fuel or water it can stop air from entering the tank as the fuel is displaced, which starves the engine for fuel.

Better get it checked by someone who knows the Oilhead fuel system.