250-500cc Gas Cap Leak

My 2013 WR250 gas cap leaks. If I fill it up all the way it will seep fuel from the cap to tank seal it has the rubber gasket there. Just for the first few miles. Anyone else with this issue.

The gasket sucks in the gas cap. If it's not seated just right, it can get cut. Then it will leak more. Worse thing about it though is it can literally fall out of the cap in a pit stop. Can't tell you how annoying it is to pull over in a race, dump gas in and take off only to get a crotch full of gas. Then scouring the pit, someone is apt to steal your damn gasket and you have to find a new one.

Also the cap only grabs at 3 points around the flange, so it will deform that and be another source of potential leaks.

So, yeah, be careful with it and make sure it is seated fully in the cap before torquing it down.


Husky has an aluminum one that I believe has full threads, so it would seat much better. Not sure about the gasket, if it's any better, but it's at least an option.

Yep it's just one of the quirks those caps have. I just got used to it and make sure the seal is seated before I put the cap on. It's a PITA but in the scope of things, it's just a minor PITA.

I replaced mine with an Acerbis cap, haven't had any trouble since.

I got the husky hard parts aluminium fuel cap for sale if you decide you want one

Was it this one?

http://www.amazon.com/Acerbis-Gas-Cap-Large-2070749999/dp/B0022ZG8TI

Yep, that's it.

Thanks.

New seal from halls is $12. Thats all I did. Should last a season of riding

I would like to get that aluminum fuel tank cap, do you still have it? If not, do you know where they are still available? I have seen them for the KTM-Huskys but I am assuming they are not the same size, does anyone know? (I have a 2011 WR300 by the way...) Thanks.

I m using an YZ 125/250 around 1999 Fuel tank cap- works fine!

Interesting. Have you had it on its side with that cap on? No leaks?

When i lost the husky cap i was looking for a replacement in my garage and found the YZ cap... which is also the same on my banshee quad.

nah sorry Boris sold it 7-8 months ago mate

Are yz250 gas caps compatible with 2007 wr250?
Inquiring minds want to know

This is an old thread, but maybe this can help others... I suffered from the same problem the thread opener had, the OEM rubber gasket sometimes fell off into the tank and at the end it cracked so I checked OEM but it was far too expensive for what it is and I went to a local rubber company and they sold me a piece of Nitrile rubber NBR , I think it was 2mm thick, I cut it out in a donut shape to make room for the inner part of the cap, it fit really good and I had zero issues with that , and it was cheap.

Cheers.

I checked the ID of my original cap, measured 65mm.
Found a candidate on ebay, will post an update after I've had a chance to check it.

I also ordered one from ebay...regular plastic

jeanjean