2011 Yamaha XMax 125 "black soot" Questions

be fuel or oil related so you need to find out which. If it is fuel related it must be running very rich so it should also be blackened like with soot and if oil wet it should be oil black on the plug

...out - it's soot, or wet soot since the bikes been idle. Normally it gets blown out (mostly) when you ride, but when they sit the moisture in the air can turn it to gooey black gunk. My best

...- black, dry fluffy soot on insulator tip and electrodes oil fouled - wet, black, oily deposits on " " " " burned - blisters on insulator tip, and electrodes worn - severely erroded or worn ...

...black soot at end of this pipe. Gets 48 mpg plus. there were stock mufflers on before this. What do I need to do to eliminate the one cylinder popping and soot? Rejet? This is typical of all Harley's ...

why are my plugs fowling out with a gas smell??? The bike is probably getting too much gas. Are the plugs wet with gas or covered with black soot? If so, that's why the plugs are fouling.

rich exhaust is real black soot blows out of the pipes when i gun it hard If its carberated you need to rejet. (lean it out) If its fuel injected you need a power comander and remap your fuel settings

...soot and not oil residue?Oh yeah,when you have new plugs in before you fire it up wipe out the ends of the pipes,real clean.Then after it runs awhile look at the pipes.Sooty? gray?black?Gray or lite ...

...black soot....should I be concerned about this? I know for cars, this often means they are burning oil If the soot is dry, it's more likely an indication of a rich fuel mixture than burnt oil. If the ...