25-08-12, 11:56 AM
Agreed, that's way too much water to be absorption from the atmosphere... it's obviously been pouring into the tank somehow.
The drain for the filler area goes through the tank, I'd guess either that pipe is leaking (near the top, otherwise you'd get petrol leaking out) or it's blocked and the water's getting in past the seal round the filler cap. You'll need to take the filler cap assembly off to investigate.
The drain for the filler area goes through the tank, I'd guess either that pipe is leaking (near the top, otherwise you'd get petrol leaking out) or it's blocked and the water's getting in past the seal round the filler cap. You'll need to take the filler cap assembly off to investigate.