Jump to content
Sign in to follow this  

02' YZ250 compression?

Recommended Posts

bought a used 02' YZ250, guy said it had newer top end, i checked compression today only getting 155PSI, but the bike starts first kick each time never fail and works great. What should the compresion be? is 155PSI bad?

Share this post


Link to post
Share on other sites

Have you search the factory specs for the compression tolerance?

Share this post


Link to post
Share on other sites

Have you search the factory specs for the compression tolerance?

 

No I haven't, I'll check that

 

yeap that is bad, I get 230 when new and when I change the piston it is still 230psi , I think 180 psi is the minimum.

Kinda thought it was bad, I keep coming up with 180 min to 240 when I looked it up. It's working really good for 155psi, kinda threw me off.

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

Reply with:

Sign in to follow this  

×