On my 1999 955i Daytona. Hoping for experts here who can help where servicing shops haven’t. I have poked - gently- down the drain pipe to clear blockage only goes about 12in? I have poked up the pipe from under the tank only goes about 3-4 inch, I have blown compressed air up and down the pipe!! all to no avail. I was recommended to buy a new tank - grrr. Problem is I don’t know what the route is like going thru the tank, is there an elbow in the pipe which would allow water out (normally) but not if you stick a tube down there - tho compressed air should shift that?? Any ideas please anyone, I hate to be beaten by a simple but important issue as I can’t ride in the wet lest water back up and flood into the petrol tank. Thanks
Definitely not had that type of problem, but good luck finding a fix.