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
bigjohn450

06 yz450 feels like it wont fully rev?

6 posts in this topic

i have a 06 yz 450 i just recently put in some hot cams did the AP mod and jetted for elevation 4200 ft. went riding today and have noticed that it does not want to rev all the way it feels like it hits the rev limiter really quick or somethin. i had a buddy ride it and i was listening while he climbed a hill and i kind of sounded like a vw or a tractor it just sounds kind of wierd comming from the exhaust. other than that it runs fine. just wondering if i need to maybe jet it different i played with the main size i thought it was maybe a little lean so i richend the main two sizes and it still runs the same. do i need to maybe get aftermarket exhaust with the bigger cams now to move more air or should the stock exhaust be sufficient. thanks in advance.

Share this post


Link to post
Share on other sites

did u ride the bike after installing the cams,jets, and ap mod...or did u just throw those parts in and just recently ran the bike?

Share this post


Link to post
Share on other sites

yes, i rode it before and after but after i installed everything i was riding the sand and never really got to open it up on a road but yesterday i really noticed it. i did do the ap mod just before the last ride though so i dont know if that has anything to do with it?

Share this post


Link to post
Share on other sites

Sounds like it may be a little rich on the main jet. Try going a little leaner on the main and see how it feels.

Share this post


Link to post
Share on other sites

i did that yesterday i was running a 170 last ride so i put in a 165 yesterday and thats when i noticed it running like this. so i thought it was running lean so i put the 170 back in and it did the same thing. when i was climbing a hill it would kind of pop just a little on the top also.

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