Where is the Car PCV Valve Located?

[DeMelanie]

PCV valve installation location: A tube from the engine valve cover connects to the engine intake pipe. The arrangement of the PCV hose varies depending on the engine model. Below is relevant information: 1. Composition: The PCV valve consists of a valve body, valve, valve cover, and spring, and is non-disassemblable. 2. Main function: It directs gases from the crankcase into the intake manifold via the PCV valve, with a small amount of air entering the intake manifold directly from the air filter through the PCV valve. This prevents icing at the throttle, incomplete combustion, and emission deterioration. It also prevents blow-by gases from entering the atmosphere and prevents engine oil from deteriorating.

[VanPresley]

Last time I got my oil changed at the repair shop, I specifically asked the mechanic about the PCV valve location. It's usually hidden on the engine valve cover, connected to the intake manifold with a rubber hose. When I popped my hood, I found it clipped to a raised section on the right side of the engine - a small black plastic valve. The position varies significantly across models: German cars often hide it beneath the intake manifold, while Japanese vehicles typically place it on the engine's side. When searching, first trace along the crankcase ventilation tube, being careful as aged hoses become brittle. This little component routes crankcase gases into the combustion chamber. If clogged, the engine will run rough and consume more fuel - address any abnormalities promptly.

[Torres]

I remember one time my old Passat had idle vibration, and a friend suggested it might be a PCV valve issue. It looks like a small mushroom on the engine, connected via a rubber hose. Most cars have it near the valve cover, but some models might hide it at the rear or bottom of the engine. When searching for it, first check the hose connections at the top of the engine. If you can't find it, you can refer to the engine compartment diagram in the repair manual. It's worth noting that rubber hoses tend to harden after five or six years, which can cause the valve to stick. If you're replacing it yourself, prepare some WD-40 lubricant to make removing and inserting the hoses easier.

[OJanelle]

The PCV valve is usually installed at the top or side of the engine, connected to the crankcase ventilation tube. American cars prefer to place it in a conspicuous position on the valve cover, while Korean cars sometimes hide it behind the intake manifold. Recently, while helping a neighbor inspect his Hyundai, I found the valve embedded in a bracket at the rear of the engine. Although this small component may seem insignificant, a clogged PCV valve can cause oil to backflow. For routine inspection, you can start the engine and remove the valve—if you don't hear a hissing suction sound, it's time to replace it.