Thread: leaking fuel tank !

It's a fairly common problem. The sealant disappears from between the tank and belly plate over time and lets moisture in which in turn allows it to rust.

This is probably what you'll find when you remove the belly plate.
When I removed the rust it revealed three small holes.


I used POR15 products to repair mine and haven't had a problem for a few years so far.
This is the same tank.



Cheers, Murray

G'day Stumpy, Sorry to say that it will be rust between the bash plate and the bottom of the tank. It can be repaired if you have no alternative but it's easier to get a new tank - preferably one that doesn't have the bash plate thingy soldered onto the bottom of the tank. If you decide to repair it firstly you have to remove the bash plate, to do this you have to apply heat (oxy etc) and take the usual precautions against explosions - and then when you have it off you can repair the rust holes if they are not too big!.

I will second the use of POR15.

It's good stuff. I used it on my 90 tank with a similar (but much worse) problem.

I just bought another tank,and never fitted the poor excuse for a bash plate,and fitted a proper fuel tank protector,with enough clearance so that you can hose out any rubbish between tank and plate.And now I don't have to worry about damaging the tank when offroad

It's a fairly common problem. The sealant disappears from between the tank and belly plate over time and lets moisture in which in turn allows it to rust.

This is probably what you'll find when you remove the belly plate.
When I removed the rust it revealed three small holes.


I used POR15 products to repair mine and haven't had a problem for a few years so far.
This is the same tank.



Cheers, Murray

Murray,
what was your process in repairing your tank? did u put the POR15 in between the belly plate and tank? Would this cause a problem when it gets brazed back together? Did u solder over the rust holes or did you rely soley on the paint? Did you put the POR15 inside the tank also?

I've got a few days, before I'm moving house, to fix my problem. It looks like paint supplies at adelaide have POR15, so hopefully i can get it pretty quickly.

Also whilst we are on fuel tanks, is the V8 fuel tank the same as the isuzu??

Cheers Oysters

Originally Posted by cornbread15

Murray,


Also whilst we are on fuel tanks, is the V8 fuel tank the same as the isuzu??

Cheers Oysters

I don't think so - doesn't the V8 have an in-tank pump?

John

Hey Murray

Is POR 15 Heat Proof?

Can it be used on an exhaust ?

Pete

OK. i think from looking at my tank and the ones on the net, the only difference is mine doesn't have a hole in the top(obviously for a fuel pump).

Cheers oysters