A two-stroke engine ignites each time the piston reaches the top of the cylinder -- that's twice as often as a four-stroke. The piston draws the fuel, oil, and air mixture in through the crankcase ...

Using Ryobi's gas-powered tools requires a bit of preparation, including getting the right fuel-to-oil ratio. But what is the ...

How hard could it to be to build a two-stroke internal combustion engine (ICE) from scratch? This is a challenge that [Camden Bowen] gladly set for himself, while foregoing such obvious wastes of t… ...

Another reason is their effect on the hip pocket: because two-stroke engines don't use valves, they need the two-stroke oil-and-gasoline mix for lubrication – and burning that special, low ...