Re: Mike's 53 Clipper

Posted by Tobs On 2019/8/2 2:13:52

This morning I folded a paper towel into about a 1 inch square and taped it over the vent hole in the gas cap. I also taped a paper towel around the circumference of the cap. Just after going through my first right hand turn, I pulled over and looked at the paper towels. The square over the vent was wet with gas, and the paper towel around the circumference of the cap was wet on the lower half. From 3 o'clock to 9 o'clock it was wet. The top half was dry.
So I think it is the vent that is letting the gas out. I have two caps that both have this behaviour. I tried making another paper gasket (paper gasket material) on top of the gasket on the old cap and gas still came out. I suppose I could try a cork or rubber gasket to seal the cap to tank interface. I'll also double check the filler neck surface for being square.
Or, I could seal the vent on one cap, and install it right before taking a right hand turn. I don't want to be driving too long with no vent and suck in the gasket on my tank sender or create some other problem. Then, if nothing comes out, I can pinpoint the source of gas to the vent.