Water in Fuel Tanks

[4129R]

Has anyone else experienced water in the fuel tanks?

The water sinks to the bottom, so not much in the tanks will be sucked into the fuel pump and stop the engine from running, and it will spread into both tanks if only 1 is leaking. 

I have checked both tank tops, and neither is leaking. There was about 2 pints in the tanks after the car was standing for about 9 months.

The filler caps are tight and the rubber connectors to the tanks are both new.

Is it just condensation in a damp climate? 

[Kendo]

That is a lot of condensation in nine months. How would the damp air get in the tank? Does it have vents open to the air? (No filters on them?) Could the water have been there nine months ago? Contaminated gas? I’m in arid California, so little recent experience with humid environments.

[4129R]

That is a lot of condensation in nine months. How would the damp air get in the tank? That is exactly what I cannot understand.

Does it have vents open to the air? The tube to the long filter is not there and like most cars, that long filter side to side went years ago
(No filters on them?)

Could the water have been there nine months ago? No the tanks were fitted completely dry.

Contaminated gas? No, 20 litres of super unleaded fuel was poured in from a jerry can, and carefully checked before it went in.

I’m in arid California, so little recent experience with humid environments.

In the UK, we have had the wettest 18 months on record.