They don't run very well on water!, must have pumped well over a litre of water out of it (plus 8 litres of fuel), then another 5l fresh fuel to wash it all out (painful!).
Luckily they've added an access point for the fuel supply line, and diagnostics can control fuel pump remotely.
Found the drain takeoff pipe from the fuel tank had a U bend in it so all the water collected in the filler cap tray was entering the tank when cap was opened for refuelling.
Triumphs have a similar fault, aluminium fittings for the drains corrode and block up then tank slowly fills with water.
Pulled all the excess pipe through and re-routed drain line (snipped excess off after.
At least it didn't turn into another wiring job!.