I have no doubt you know a lot more than I do when it comes to engines.
However,
suck, squeeze, bang, and blow applies to a 2 cycle engine as well as a 4 cycle. If you disagree.. then you are saying this explanation (which is correct) is wrong. On the upward stroke of the piston there is a vacuum created under the piston. Then that vacuum is used to
suck in air fuel. The piston
squeezes the air fuel mixture - then the spark plug
bangs. On the downward stroke, the crankcase has pressure instead of vacuum - and that pushes in a new air fuel mixture and
blows out the burnt gasses - or exhaust.
[ame="http://www.youtube.com/watch?v=CLs4BOVYD7c"]YouTube- ~The Two Stroke Cycle Engine~[/ame]
Got to add this before I hit: "Submit Reply"
I just realized what you are saying.
You are saying that a 2 cycle does not "SUCK" air fuel - because in reality the downward stroke PUSHES the charge from the crankcase into the combustion chamber - and that in turn replaces the exhaust. That could be the technicality that makes you disagree.