Petrol leak

After a few weeks of getting a whiff of petrol fumes I decided today to check this out... I discovered a leak- a damp area - running from the top of the petrol tank to the underside of it, and after shutting off the engine I could hear a hiss coming from the petrol tank area itself. I suspect and perished hose or a loose connection as I don't see how a puncture to the metal tank top surface would be likely. Has anyone had a similar problem and what was your fix? The tank still holds petrol it's not gushing out.
Tony.

Not on a JImny but I had a similar thing happen on another vehicle - the way the tank was made was like... imagine a washing-up bowl with a flat lid welded over the top.

...The welded seam had started rotting. It only leaked when the tank was full, and as I'm a big believer of leaving a tank full rather than empty, in order to reduce condensation, it had to be replaced

It could be the gasket on the fuel gauge sender but I confess I've never had reason to inspect a Jimny tank. Chris.

I was surprised at this too, on a Jimny, the fact is over the 50 years of car ownership, new and old bangers, this is my first experience of a leaky tank. Does anyone know the proceedures to drop a tank for inspection? Seems like the prop would need removing too... First time for everything.
Tony

Somewhere on the forum there is a detailed feature on removing the tank ( I think it's got something to to with rust prevention), hopefully someone will chime in. Only ever had a problem with a S800 coupe where the tank was inside the car! Thank goodness we've moved on from that safety feature. Chris

That would be great if someone could point me in that direction of removal... One other thought, is there a removable inspection cover under the seats to get access to the tank top, I'm sure it's from there any repairs could be carried out. Only I have heard the prop shaft needs to be removed and the tank dropped to gain access to the connections which seems a hassle of sorts.

Cheers
Tony.