it can mean one of two things it could be that the carburetor is feeding it too much fuel to air mixture or it could be that it just has carbon built up usually it will build up carbon if it idles for long periods of time you can fix this by just doing your basic tune up
We have stuff like that, but we don't actually know for sure what it is... I think it's like a moss which grows in pipes and waterholes.
Rust?
Raise the vehicle safely and start engine with transmission in park and E brake set. Stuff a potatoe in the tail pipe and the leak should show itself.
That is a very odd question, you may mean exhaust gases from the engines which appears a s white contrail when flying high ?
Through Wires, Pipes and stuff
chlorine
If your referring to the bluish/purple color that's from heat. The is some stuff you can treat your pipes with don't remember what it is called. But you can get it at any Harley Davidson dealer. They put it on chrome pipe to keep them from turning blue. I'll add-it never worked for me
I have no idea so I'd recommend that you visit your doctor.
It is just part of the computer. It's not really part pf the screen
sounds like catalytic converter is coming apart.
oil is leaking into combustion chamber
because it get all the stuff stuck in it lul