Unburnt fuel.
Unburnt fuel
Unburnt fuel
It would be unburnt fuel
Engine Timing, Unburnt Fuel
excessive or unburnt fuel.
Unburnt fuel in exhaust.
It converts carbon monoxide, nitrous oxides and unburnt fuel into carbon dioxide, nitrogen, and water vapor.It converts carbon monoxide, nitrous oxides and unburnt fuel into carbon dioxide, nitrogen, and water vapor.
the black smoke is unburnt fuel. you need a leaner air/fuel mixture.
unburnt fuel
Measures air and unburnt fuel in exhaust. Tells you computer how to ajust fuel and air mixture.
Black smoke from an engine is caused by unburnt fuel.