From Lake Ontario, the water from the Great Lakes flows through the St. Lawrence River all the way to the Atlantic Ocean, about 1,000 miles away. This system greatly affects our way of life, as well as all aspects of the natural environment, from weather and climate, to wildlife and habitat.
The PCV (positive crankcase ventilation) valve is a one-way valve that recycles crankcase gases back into the engine to burn. A plugged PCV valve can result in a rough idle and poor mileage. Worse, it can cause costly oil leaks. Always follow your manufacturerâs replacement recommendations.
1 A PCV valve is located on the passenger side valve cover on many Mustangs and is connected to the intake manifold. 2  The PCV system siphons harmful vapors from the crankcase and routes them into the intake manifold. hose connects the PCV valve to the intake manifold. A second hose between the air cleaner and crankcase or other valve cover (V6 or V8 applications) provides fresh air to help flush the vapors out of the crankcase.