HEADS UP!!!

Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0
worthyking

YZ450F engine noise? Is this normal?

2 posts in this topic

Hey guys, I have an 03 YZ450F that I just recently bought. After riding a couple weekends I noticed a loud engine noise. To me it sounds like valves knocking. Reading these forums I have found other threads that say it's normal for these bikes, but I just want to be sure before I do anything rash.

So...I took a video clip of the bike idling and wanted to see if you guys could take a listen and tell me if i need to worry.

Here it is:

Share this post


Link to post
Share on other sites

Some noise is normal depending on the miles on the engine I would say yours sounds too noisy for normal. the most common easy areas to look at are cam chain tensioners and clutch basket. just having valves that are a little loose don't make a lot of noise. things like loose pistons and rod bearings also rattle but of course involve deep inspection.

Share this post


Link to post
Share on other sites

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
Sign in to follow this  
Followers 0