Topic: Exhaust leak triage

[Artf0rm]

So I have my bike running and idling at this point but I have noticed that once the bike warms up I have what I would call a medium exhaust leak on one cylinder and a small leak on another.  I installed Carpy's 4-1 yoshi style exhaust with new crush washers.  Now that I have identified the problem where should I start to work through fixing it? 

[Rigid]

I would suspect that at least a couple of cylinders still had gaskets on them and the new ones are installed over the old ones and leaking.  I had that happen to me a couple of times before I really took the time to clean the port area and make certain there were no old ones in there.  Other than that, retorqueing the studs after a few rides will help.  Also check the flanges over carefully for distortion.

[Artf0rm]

Thanks rigid.  I think I got the old gaskets out but there is a ton of caked black stuff that seems never ending.  Any suggestions on a product or chemical to pull that stuff off?

[Rigid]

I just scrape it out carefully with a small screwdriver.  I bet there is another gasket under that carbon coking.  The port is aliminum and that shouldn't be scratched.  I lay on my left side on a towel on the floor with a good light and scrape away.  I don't like mechanic's creepers as they are always rolling away when I try to push or pull on something.

[Danno]

B12 chem tool removes carbon pretty well