What does black smoke from exhaust mean motorcycle?
Black or gray smoke often indicates a clogged air filter or your bike is running too rich. If you have a motorcycle with a carburetor, you need to adjust the jetting. If your motorcycle is fuel injected, the fuel return line might be clogged or something is wrong with your injectors.
Why does my motorcycle have black smoke coming from the exhaust?
Black soot on the spark plugs suggests that the fuel/air mixture is too rich, resulting in gray exhaust smoke. A shiny, wet, black film on the plugs is a result of excess oil, and this causes blue smoke. Check and clean the air cleaner which may have become clogged, causing gray smoke.
What happens if your motorcycle is smoking a lot?
If your bike is smoking a lot and the smoke is black or very dark, you may have a problem of poor carburetion. In this case, you will notice other symptoms of mechanical failure in your machine, such as the engine bogging down and even stopping while in motion.
What should I do if I have gray smoke coming from my exhaust?
If gray smoke persists, consult the user’s manual for your bike to find out how to make the fuel mixture more lean. Inspect the piston ring and valve seals to ensure they are air-tight. If you are unsure how to do this and your user’s manual does not provide instructions, seek professional assistance.
Why does the throttle stick on my motorcycle?
A motorcycle idles high when it is getting too much of an air and fuel mixture in a low speed or neutral position. This is usually caused by the idle screw on the carburetor being out of adjustment, an out of place throttle handle screw, a bad carburetor throttle spring, or a sticky throttle or throttle cable.
Black soot on the spark plugs suggests that the fuel/air mixture is too rich, resulting in gray exhaust smoke. A shiny, wet, black film on the plugs is a result of excess oil, and this causes blue smoke. Check and clean the air cleaner which may have become clogged, causing gray smoke.
If your bike is smoking a lot and the smoke is black or very dark, you may have a problem of poor carburetion. In this case, you will notice other symptoms of mechanical failure in your machine, such as the engine bogging down and even stopping while in motion.
If gray smoke persists, consult the user’s manual for your bike to find out how to make the fuel mixture more lean. Inspect the piston ring and valve seals to ensure they are air-tight. If you are unsure how to do this and your user’s manual does not provide instructions, seek professional assistance.
Why do I have blue smoke coming out of my engine?
Those engines normally emit a blue/gray smoke. But if it’s excessive then you’ve got a burning oil problem, a rich fuel condition like noted above, a bad spark plug or a malfunctioning power valve. Additional issues causing oil to burn on 2-Strokes or 4-Strokes include: