Re: A Warning

Posted by Bob J On 2023/6/16 13:44:37

To this issue, is there a tool like there is for a modern radiator that you can plug into the gas tank filler neck and pump up? It would need a gauge to show any leaks. (Mine has internal ears to hold the cap so is not a smooth bore for a normal rubber stopper)
It would be very advantageous to be sure that the system is tight BEFORE adding fuel to a rebuilt system. Areas like double flare joints at the sender unit and the fuel pump flex line, and the aforementioned gaskets and diaphragms may not be fuel tight and this way you would know before charging the system with gasoline. It would allow you to paint the joints with soapy water like on a propane tank coupling.
Maybe you remove the filler neck and insert this tester in the gas tank neck to get a simpler ID seal?
Bob J.