10 FE450 Smoke

Hey all,

 

So I changed mufflers on my 2010 FE450 from the factory krimzon to an fmf ti4. I have noticed that it smokes on start-up, and after riding there will be a nice layer of soot on the tip of the muffler. Any ideas?

 

I know that its not burning oil because that would be blue smoke...but this smoke is more black, which suggests un-burnt fuel. I am running high octane fuel.

 

Would putting an iridium spark plug in help?

 

Thanks

I had similar symptoms.  Turned out to be a leaking exhaust valve stem seal.

Ok thanks!

I can relax know that I know its not too serious.

Might be a leaky injector. There FI system stays under pressure when shut off, so some fuel might leak out over time if the injector is leaking.

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