Coborn refurb : Fuel tank

I would be very grateful for some advice with regards a fuel leak that there appears to be on the tank of the Coborn.
Having finished(?) work on refurbishing the engine and tin ware some fuel was put into the tank for the first time. There is a slow leak of petrol from the seam at the bottom of the tank near the tap. Unfortunately the fuel has also reacted with the new enamel paint but that can be sorted relatively easily. Any ideas please as to how the seam leak could be repaired would be much appreciated.

Soft solder the seam.

Maryalice

Or, JB Weld it's fuel proof. I've used it to cure a small leak and it works OK. If the leak is at the bottom of the tank (as most seem to be) it can be sanded down and over-painted so it's hardly noticeable.

As I mentioned in my posts on the H4 pump and Lister "D" renovations, (see page 6 of 6 under Pumps and Driven equipment), I have had good success using POR 15 Patch Filler and Seam Sealer. I used it on the Scott generator tank over a year ago and it is still perfect and maybe more interestingly it was still soft and perfectly usable a year later on, to repair the Lister D tank. Normal disclaimers apply!

Neil

Many thanks for the information. Not something I have heard of but will certainly look at it.

Be aware that a lot of sealers do not like the new types of petrol with high levels of Ethanol in the mix.

Maryalice

A very valid point. There are many fuel tanks out there with protective coatings in them which are now breaking down, causing all sorts of problems. An issue which plagues the motorcycle world, as well as the engine movement.

All I can say about the Patch Filler is, according to the manufactures blurb, it's a direct development of their standard tank sealer POR 15, just a much thicker version of it, which is claimed to be totally impervious to all fuels, including ethanol based ones.

Total disclaimer but it worked for me and so far I'm happy with the results. It is not cheap, so I suppose you pays your money and take a chance, it's up to you.

Cheers,

Neil

Many thanks for those suggestions and ideas.