94 Continental Engine Problem

When I first bought the car it would not go over 40 (MPH) I thought it was the transmission......I change the fluid, filter, I knew it wasnt a gear because when i drop the pan it was not any metal. I use a scan tool and it pass all the transmission test...........

So i was just driving the car and the car cut off on me............ I notice a rubber holes pop. I put the rubber hole back where it came from and the car came back on but the engine began knocking/slapping. Now when i take the engine oil cap off it is kicking out alot of pressure. And when I let the car run sometimes the engine stops knocking/slapping.......................

I want to know do any1 here knows whats going on and what should I do

PCV valve?

umm......... I dont know what a PCV valve is..............what is it and where is it located

umm......... I dont know what a PCV valve is..............what is it and where is it located
Is this a six cylinder?
The PCV on my six cylinder is on the driver's side rear valve cover with a smallish rubber hose to it.
It's just a guess. Maybe you blew a head gasket, too.