Petcock Leaking After Re & Re

Just reinstalled my petcock tonight after doing a pre-season tank flush along with an oil change and carb cleanup. I've never had any problems with the petccock until I reinstalled it and added a little fresh fuel to check for leaks. It's dripping out pretty good. I was wondering if anyone uses RTV or anything like that as backup when installing their petcock. Thanks.

If it's leaking between the gasket and tank, you need a new gasket (seal).

Got the new gasket at the local bike shop. Luckily he just happened to have a couple laying around. I paid over $4 for this little gasket... But it fixed my problem!

Luckily he just happened to have a couple laying around.
He had it because it fits every YZ and WR made for the last 12 years except the EFI bikes.
He had it because it fits every YZ and WR made for the last 12 years except the EFI bikes.

Yea, well he's not a Yamaha dealer or anything. Just a good independant shop that services all makes and models. I think he might've said this gasket also fits some Kawi models.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now