High crank case pressure is caused by "Blow By" (Exhaust Gas bypassing the Compression rings on your pistons a little blow by perfectly normal) There will be a valve like a PCV valve in your Valve cover. Its probably faulty, replace it. may be plugged, change it.
In crankcase filter box
the valves or rings are allowing compression blow by to enter the crankcase which causes excess pressure that is brought to the carburetor by the breather tube. your engine is getting tired or you have too much oil in the crankcase.
High crankcase pressure usually would be caused by clogged oil journals in the engine. There are passages through out the engine allowing gasses to escape from it. Older Ford Trucks actually had a vent tube that stuck out of the bottom of the engine to release this pressure. Burned valves and bad lifters and/or push rods can cause this also. Generally a tear down would be necessary to pin point the problem.
Possible causes of fuel in crankcase are: Leaking injector at shutdown, flooding of the engine due to hard starting, defective fuel pressure regulator. A fuel pressure check for drop of fuel pressure at shut down will verify if an injector is leaking. Get this fixed ASAP, and stop driving the car until you do. Fuel in the crankcase will cause severe engine wear and destroy this engine. Change the oil and filter if you have to drive it anywhere for repair.
Excessive revving of an engine causes overpressure in the crankcase. It causes unhealthy expansion in the pistons and the valves.
PCV stands for POSITIVE CRANKCASE VENTILATION When the engine is running it builds pressure inside of the engine and if the pressure is not released then it will blow out the engine oil gaskets and leak oil.
A PCV valve is for positive crankcase ventilation. It is to keep crankcase pressure from building up in the engine. If it does it can cause seal leakage, air filter contamination and engine blowby.
Did you mean PCV [positive crankcase ventilation]....that valve helps keep engine gasses from going to the atmosphere but wont allow intake pressure back to the crankcase.
Vacuum should always be present in crankcase, it is provided by the PCV (positive crankcase ventilation system) pressure is what you don't want to see.
crankcase oil is the oil in the engine .some call it crankcase oil some call it engine oil
the crankcase is below the engine block and holds the crankshaft pasta master
Crankcase oil is engine oil , so yes