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
silentZ

bike wont start after carb clean '08 YZ450

3 posts in this topic

Hi,

I recently cleaned my carb and now the bike will not idle and only starts if I crack the throttle a little. The bike fired up first kick cold before any maintenance.

All jets, needles and positions are stock except for a 165 main.

FMF powercore with powerbomb header

Fuel screw 2 1/4 turns

I messed around with the fuel screw, moving to 2, 2 1/2 then to 2 3/4. I also tried many other variations.

I think I flooded it trying to kick it so many times. I also noticed some fluid coming from the front of the head gasket and also the next gasket down. I guess that is the cylinder gasket. That kind of freaked me out and I stopped even trying to start it after seeing that.

While the carb was off I checked the hot start plunger and it was functioning fine.

At the track, someone said it smelled like old gas. The gas was really only a few weeks old and there was not much in the tank when I mixed it with fresh gas.

I didn't think the plug had fouled since I could still start it with a cracked throttle.

Thanks

Share this post


Link to post
Share on other sites

Where's your idle set? Also I run all my bikes af screw at 1 and a half

Edited by chris856

Share this post


Link to post
Share on other sites

I think I figured it out. It appeared that there was a leak at the gaskets, but the fluid actually just ran down where the pipe connects to the head. Apparently you can't fix stupid.

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