At My Wits End

[suggsd]

Single cylinder engines are pumps. As they bring air and gas in the cylinder with the downward movement of the piston, they also force a corresponding amount of crankcase air out because the volume of the crankcase decreases as the piston travels down. It is this very thing that makes 2-cycle engines possible.

So, yes, air coming out of the crankcase is normal.

I never realized that but that is only way it could function .

 

[suggsd]

I'm out.

I really like your quote that's a good one and very true .