Towards the end of last summer I started to notice a smell petrol around the bike that only got worse. Now I am getting petrol drips from the back LHS of the tank. I was unable to see the source although there was a bit of bubbling of the paint. So I bought a cheap endoscope from fleabay I must admit it works a treat.
Unfortunately I still cannot see any leak however I can see a lot of corrosion that looks very uneven probably due to condensation.
I have read on this forum about cleaning the inside of the tank with nuts and bolts or even gravel. I am worried about making any pinholes worse. Any advice would be welcome.
As an alternative I am tempted to use “Evaporust” to remove the rust before POR15 tank sealer. I took this from motorcycle forum
https://www.motorcycleforum.com/threads/por-15-gas-tank-restoration-kit-how-to-tips.199570/ First job is to get some plugs for the tap holes I think they are 3/8” BSP thread. Then buy the rust remover.
I was wondering how to seal the filler cap the only way I can see is to put some plastic under the filler cap.
See the pictures of the inside of the tank.
I was lucky. When I removed the tank found that it was rubbing on the oil feed to the rocker box! I am not sure how much damage might have been caused before I noticed the oil. See photo.
John
