This was interesting, but never tried the stuff: https://www.gluegun.com/blogs/news/b...20the%20market.

Also, without endorsement, (but I've had nothing but success with the Loctite, in several situations):

 

It’s a gamble, I haven’t had success gluing plastic together, except my model cars when I was younger

 

Plumber's GOOP sticks to most all plastics.

 

It's not just the plastic, it's the solvent (gasoline) that breaks the bond. Is a new tank really that expensive? Or is it just unavailable (like so many other parts)?

 

New tank is around $550.00 - $600.00

 

Then there’s eBay

https://www.ebay.ca/itm/393649915709...mis&media=COPY

 

How did the tank get damaged? I thought we were talking about sealing tubes and fittings.
The P0442 test doesn't run until there is room in the tank for air, between 15% and 85% and only after a cold start.

Once again it is not the light that is the problem., that is why it seems to pop up at 1/8.

 

The sealant around the vents, broke loose, rendering the tank to be toast!