Want this question answered?
There is a brake line vent tube on most Volvo trucks which allows excessive pressure to be released. This prevents catastrophic failure to the system.
Draft tube or pcv system.Draft tube or pcv system.
Your 1988 Yamaha Virago 250 pours oil from the crankcase vent hose because of a disconnected crankcase vent line.
It's on top of the driver side valve cover. It runs right back into the intake tube.
Engine over full, diesel in the oil, excessive blowby.
The PCV valve is in the crankcase vent tube It is on the right of the exhaust heat shield below the ignition wires going into the coil.
Allow pressurized gases to vent from the crankcase.
Their is no PCV valve on this engine only a crankcase vent tube connected to the bottom of the air box. Left/front of the air box.
A few simple answers here... That oil is from the crankcase vent tube that comes in at the bottom of the box. It helps crankcase fumes to vent and get burned in the engine to reduce emissions. Several things cause the oil to come in. 1. too much oil in the engine/crankcase... (very common). 2. a plugged pcv (pos. crankcase ventilation) valve. normally located on the top of the engine on the valve cover. 3. high mile engines get some "blow by" thru the rings of the cylinders. this excessive compression gas gets into the crankcase at the bottom, then has to push out thru the vent tube at the top and takes some oil with it. Make sure your crankcase venting system is clear and clean. A plugged system can cause pressure buildup and it has to push out somewhere. eventually you can blow engine mainseals at both the front but mainly the back between the engine and tranny. An expensive repair bill there...
The crankcase vent on a 1996 Suzuki Intruder VS 800 is located along the side of the engine. It allows vapors to escape from inside the engine.
An open ventilation system simply lets the crankcase fumes vent into the atmosphere. A closed system reburns the crankcase fumes via the pcv valve.
I believe you are talking about a PCV valve. PCV means Positive Crankcase ventilation.