It won't rev properly, and the spark plug might soot up.
yes bike will loose power.. May flutter too. Depends on weather to make it slightly rich to get bottom end..
Black spark plugs indicate that the fuel mixture is too rich in fuel. White spark plugs indicate that the fuel mixture does not have enough fuel. The proper color for spark plugs is tan. Black spark plugs also indicate that oil is entering the combustion chamber and burning. If your lawnmower is 2 stroke, this is probably normal due to the gas/oil mix of fuel added to the tank. If your lawnmower is 4 stroke, you need to adjust the carbs to reduce the amount of fuel in the fuel/air mix.
1. If you mix the fuel with too much oil you will foul the plug. 2. If you put too little oil in the odds are good you will seize the motor.
burning to "rich", too much fuel. This is a result of an incorrect air/fuel mix. check fuel pressure regulator, Oxygen sensor (s), and maybe PCM.
A rich condition.
if its a 2- stroke you either imixed your fuel too rich or you have a bad crank seal and trans oil is being blown out the exhaust
You are running too rich. the mixture of fuel and air has too much fuel in it,
You can stop your 7.3L from blowing black smoke by verifying that it is burning fuel cleanly and make sure the fuel mix is not too rich. You can also verify that it is not burning any oil.
Simple answer: air/fuel mixture is off. Too lean means too little fuel, too rich means too much fuel. Can be adjusted via air/fuel screw on a carb or via a remap on EFI. If you make changes to the air flow, you need to adjust the fuel as well.
generally too rich somewhere. if sputtering 1/2-3/4 needle is too rich. if sputtering at wot, main jet is too rich.in generalsputter=rich, BOOWAHH sound=lean
To deliver fuel and oil too the cylinder.
their really is not a specific fuel octane mix. if you just run premium in it, it will be fine, but if you do put octane in, just put a little bit in it. because it could make your fuel too rich and foul out your spark plugs.