gas caps

[rolfer]

Last time I was on the track I noticed fuel was leaking out of the both gas caps and would have to clean off the rear fenders. I started out with both gas tanks full because usually by the end of the day they are pretty low. Even after my third 30 minute session I was still having to clean streaks from both gas caps on the top of the fender all the way to the back. It does not leak a lot just enough to streak.

As far as I can tell the fuel tank vents are working properly.

I am running the regular factory five gas caps.

Has anybody had problems like this?

Does anybody have any idea what I can do about this while keeping the factory gas caps?

[beeman]

Would a fuel rollover valve fix this? I know there's not a lot of room to plumb one in... Mike/Crash probably has a fix

This fuel check valve looks promising and would probably fit...I don't recall what diameter you'd need...

https://www.tanksinc.com/index.cfm/page/ptype=product/product_id=886/category_id=167/mode=prod/prd886.htm

[crash]

The seal preload is adjustable. IIRC you have to go in the inside of the cap and adjust the nut. I am not at the shop so cannot look at it right now, but that is what I recall. I have had to adjust them a couple times over the years. Also the screws can leak. You may need to put some sealer on the screws. I have never done this, but I did notice that someone in the past had put sealer on the filler screws around the outside ring.

[rolfer]

Thanks!!! Sounds like that is exactly what I need to know.