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Because of the way 2 stroke engines work. On a 4 stroke engine there are intake and exhaust valves in the head, and the crankcase is full of oil. On the intake stroke, the intake valve opens and the fuel-air mixture is sucked down into the cylinder. On a 2 stroke engine they put the fuel-air mixture into the crankcase. On the piston's down stroke, the bottom of the piston compresses the mixture. When the piston goes down far enough to open the inlet, the fuel-air mixture is squirted into the cylinder. If they put motor oil in the crankcase, you'd wind up squirting liquid oil into the cylinder. When the engine tried to "compress" the liquid oil, the incompressible liquid oil would break something.
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∙ 15y ago
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How do you you determine if a natural gas engine is 2 stroke or 4 stroke?
All natural gas engines are 4 stroke. In a 2 stroke engine the oil is mixed with the gasoline. This is not possible when using natural gas as a fuel.
How do you change oil in a two stroke engine?
There is no oil to change in a two stroke engine. The lubricant is the oil that is mixed with the gas.
What type of gas is used for a 2 stroke engine?
pre mixed ration of oil : gas
Do 4 stroke engines use mixed gas?
NO 2 stroke use mixed gas
Does a 99 Honda 125 4 stroke need oil mixed in with gas?
Four stroke engines use an oil sump, and do not need to have oil mixed into their fuel.
What happens to a 2 stroke motor runs on 4 stroke gas?
The engine will be ruined because a two stoke needs oil mixed in the gas for lubrication.
What is the main reason spark plugs foul on a two stroke engine?
Gas mixed to rich
Does Honda xr80 use mixed gas and fuel?
No it does not use mixed gas and oil-it is a 4 stroke which runs just like a automotive engine with pressure lubrication. Gas only goes in the gas tank.
Will 4 stroke gas work in a 2 stroke engine plane?
for a short time. 2 stroke engines require that oil is mixed with regular gasoline. without the oil the engine will overheat the metal will expand and seize causing Catastrophic engine failure
Is fly mo lawn chief rl 400 2 sroke or just petrol?
If the engine has an oil filler cap and an oil sump, it is a four-stroke engine. The oil goes in the sump and the gasoline in the gas tank. If there is no oil filler cap or oil sump, the engine is a two-stroke and the oil and gas need to be mixed before adding.
What oil is faster 2 stroke or 4 stroke?
Oil is a lubricant. 2 stroke oil is designed to be mixed with gasoline and in that form it lubricates the engine. 4 stroke oil lubricates the engine but is not burned as 2 stroke oil is. This has nothing to do with speed. So, the answer to your question is neither is faster as they are just lubricants.
Does a two stroke engine take mixed gas?
I have a two stroke and it takes mixed gas as does my friends two strokes so unless your bike is different I would assume so but honestly you should check out the specs for your bike just to make sure
