Small Engines (Lawn Mowers, etc.): problem with 16 Hp briggs/straton engine, briggs straton engine, hp briggs

Question
The engine started pushing lube oil into the air intake filter box....it gets sucked into the cylinder..big smoke.....crankcase is presureised..
opening the oil fill cap.causes oil to be blown out of it..engine is single cylinder vertical shaft..riding mower..something is porked in vent
system...engine has plenty of power....model number of engine 28q777  type 0642...I don't understand the breathing   vent system... so i dont know where to look for the problem.....thanks....Ed


Answer
Sounds to me what you have is a stupid mower.  Does your mower look anything like the picture in my profile?  If so shoot it now!  Does your mower not know any better than to push lube oil into the air intake?  Send your mower to school!  Something is "porked" in the vent.  What is porked?  Unpork the vent would be my suggestion on that one until you can explaing to me what porked means.  By the way you spelled pressurized wrong.  Just letting you know for future questions so you don't look like an idiot.

Cletus