1999 yz 400 new topend rebuild

Well i had my 99 yz 400 topend rebuilt from piston to valves chain cams etc. I went for a ride today and it ran great. but towards the end of the day i started to hear some light valve tap noise. My mechanic told me that it is normal but want to get a second opinion. It starts hot which it never did before and has lots of power!! I love the bike and know its old but it kind f sticks with me. Can anyone help? Thanks

Forgot to add i have about 4 hours on the motor.

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