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
Jawmail

Plug check

2 posts in this topic

When you are checking for lean/rich conditions after rejetting do you have to use a brand new plug ? Do you just warm up the bike, go around the block, then turn it off. Any help is appreciated.

:crazy:

Share this post


Link to post
Share on other sites

I start with a new plug. Drive around until the engine is warmed up. Then I start a run far enough from my garage to run about 1/2 throttle for a minute (in a lower gear to match the local street speed limit) pull the clutch, kill the engine and glide to the driveway. Let it cool and check the plug for a nice warm brown color. You probably know that white is lean and black is rich (normally).

An older plug can also be a great indicator of engine ignition conditions. The condition of the electrode (the little thingy attached to the plug bottom) is helpful for longer term conditions like preignition, too hot/cool plug type, etc.

There are threads with pictures of plugs to help define what these are as well.

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