Fuel neck water

[Andy Mo]

I have a 2012 R3. Every time I wash the bike or ride in the rain the recessed filler neck on the tank fills up with water. If you open the fuel flap the water runs into the tank. There is a raised drain pipe in the tank recess that is sealed by a plug on the cap I assume to drain water from the key hole. There is another smaller hole in the recess that doesn’t go anywhere. What am I missing ?

 

[TURBO200R4]

I have a 2012 R3. Every time I wash the bike or ride in the rain the recessed filler neck on the tank fills up with water. If you open the fuel flap the water runs into the tank. There is a raised drain pipe in the tank recess that is sealed by a plug on the cap I assume to drain water from the key hole. There is another smaller hole in the recess that doesn’t go anywhere. What am I missing ?

One possibility is that you have the hoses switched on the bottom of tank.
The other possible thing is that the water drain hose is plugged with mud or crimped . I checked mine with air pressure and the water drain blew through easy and the gas/fumes blew the hose off so had to lift tank to put back on.
Going to guess that you need to run a small drill up at the bottom to clear the obstruction.

 

[TURBO200R4]

Btw
Welcome from Tucson Arizona Usa

 

[Andy Mo]

One possibility is that you have the hoses switched on the bottom of tank.
The other possible thing is that the water drain hose is plugged with mud or crimped . I checked mine with air pressure and the water drain blew through easy and the gas/fumes blew the hose off so had to lift tank to put back on.
Going to guess that you need to run a small drill up at the bottom to clear the obstruction.

Thanks for the advice. I have hopefully solved the problem although I had to lift the tank to do it. The keyhole drain is a straight pipe to the back of the engine. The recess drain is another issue. The hole was blocked an inch from the recess hole. The routing of the pipe thru the tank is not straight and it was a mission to unblock it. I took the pipe off under the tank a had to use thin spring steel wire to work the crud loose and then blow it thru with water. The reason that you can’t use air to clear this pipe en situ is that it doesn’t vent behind the engine but goes via a complicated series of formed elbows into a beer can sized contraption behind the LH side cover. What this does I can only guess that it maybe forms a vacuum to drain the recess and this is not free flowing. That’s why blowing air down the drain will blow the pipe off the tank. The pipe to the beer can is now open but once connected is restricted. I still have try to see if the recess drains now but I suspect it only happens with the engine running…

 

[Andy Mo]

Thanks for the advice. I have hopefully solved the problem although I had to lift the tank to do it. The keyhole drain is a straight pipe to the back of the engine. The recess drain is another issue. The hole was blocked an inch from the recess hole. The routing of the pipe thru the tank is not straight and it was a mission to unblock it. I took the pipe off under the tank a had to use thin spring steel wire to work the crud loose and then blow it thru with water. The reason that you can’t use air to clear this pipe en situ is that it doesn’t vent behind the engine but goes via a complicated series of formed elbows into a beer can sized contraption behind the LH side cover. What this does I can only guess that it maybe forms a vacuum to drain the recess and this is not free flowing. That’s why blowing air down the drain will blow the pipe off the tank. The pipe to the beer can is now open but once connected is restricted. I still have try to see if the recess drains now but I suspect it only happens with the engine running…

Thanks for the welcome ! I am in East London, South Africa

 

[Frans]

The reason that you can’t use air to clear this pipe en situ is that it doesn’t vent behind the engine but goes via a complicated series of formed elbows into a beer can sized contraption behind the LH side cover. What this does I can only guess .....

is it not this one? Removing the Evaporative Canister? In which case i would suspect that the pipes are not connected correctly as mentioned above

 

[Andy Mo]

is it not this one? Removing the Evaporative Canister? In which case i would suspect that the pipes are not connected correctly as mentioned above

I have swapped the pipes around. Hopefully this is the fix. Thanks guys !