Originally Posted by bjr7742
Thank you guys for this article, i just got a got my bike back from a water in the tank issue and got about 10 miles and the bike died. I found out later that the gauge was showing 1/4 of a tank and instead i ran out of gas. I am going to try the fuel injector cleaner and pray! 400 bones for a new sensor is alittle high. Thank you for your help.
canyon red k1200lt
I doubt the issue is a chemically-curable matter -- there's plently of clearance along the float tube, so it's not very likely that deposits are "gumming up" the sensor.
If the gauge is stuck at 1/4 tank, you will likely find that the float tube is dented at that level. Relatively easy to check, and fix, if that's the issue -- no need to pop for a new sensor.
The unit is shown at page 16.8 of the Repair Manual. The upper fairing side panels and the radio stingray need to come off, then simply unbolt the float tube ("immersion tube") from the right top side of the tank and pull it straight out.
If there is a dent in the side of the tube, stick a rod/screwdriver/etc. up the inside and whack it back out, then reinstall the unit in the tank. That's it.
Of course, you should also try to figure out *why/how* the sensor got dented in the first place. The only three ways of which I'm aware are:
(1) Mishandling of the sensor during some maintenance activity (how did they remove the water from the tank, pull the sensor and siphon out the water? Did they actually confirm that there was really water in the tank?);
(2) Turning the gas filler nozzle to the rear during refueling (not likely this, as dents from this are typically much higher up the tube than the 1/4 level);
(3) Collapse of the plastic fuel tank inward due to build-up of vacuum in the tank (very likely, as the dents are typically at the 1/4 tank level). This is due to a blockage in the tank vent path, which in turn is typically due to a clogged charcoal canister and/or the hose leading from the tank to the canister. Search on "canisterectomy" for more info and a solution (canister removal and hose re-routing).
FWIW, if your original water-in-the-fuel symptoms were bike stumbling and dying, it probably wasn't a water contamination problem in the first place, but a clogged canister -- these symptoms and the 1/4 tank dent go hand-in-hand with a canister/tank vent issue.