Nissan PCV valve replacement
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Nissan PCV valve replacement
Nissan PCV Valve Replacement
PCV stands for positive crankcase ventilation. The PCV valve is part of the emissions control system on your Nissan and it is also a crankcase ventilation system. It allows the Nissan’s engine to ‘breathe’ and removes harmful oil vapours from being released into the atmosphere. The PCV valve regulates the pressure and vapour being released out of the crankcase and moves the vapour into the intake manifold where it blends with the air/fuel mixture and continues through the combustion process.
The valve is situated near or in the top of the Nissan’s rocker cover (valve cover). The PCV valve can get stuck open or clogged with sludge and should be inspected regularly and replaced when required. If the PCV valve is failing it can cause your Nissan’s engine to run rough and you may notice some exhaust smoke and oil leaks.
One end of the valve is larger than the other, making it almost impossible to fit the valve the wrong way round. Internally the PCV valve closes when your Nissan’s engine is off or when there is back pressure. It opens when the engine is idling (low flow) and accelerating (high flow) based on vacuum pressure.
If the PCV valve is left faulty, the extra gunk can foul your Nissan’s spark plugs and increase oil consumption. For such an inexpensive item, there really is no excuse for not getting the PCV valve replaced. New spark plugs and replacing burnt oil will cost you much more.
Nissan Models
- Nissan 1200/1400/1600
- Nissan 120Y Sunny
- Nissan 140/160/180
- Nissan 1800/2000
- Nissan 200SX
- Nissan 240C
- Nissan 240K-GT
- Nissan 240Z
- Nissan 260Z
- Nissan 280C
- Nissan 300C
- Nissan 300ZX
- Nissan 350Z
- Nissan 370Z
- Nissan Almera
- Nissan Altima
- Nissan Bluebird
- Nissan Cabstar
- Nissan Cabstar-E
- Nissan Cedric
- Nissan Dualis/Dualis+2
- Nissan EXA
- Nissan GT-R
- Nissan Juke
- Nissan Leaf
- Nissan Maxima
- Nissan Maxima QX
- Nissan Micra
- Nissan Murano
- Nissan Navara
- Nissan NX
- Nissan Pathfinder
- Nissan Patrol
- Nissan Pintara
- Nissan Prairie
- Nissan Pulsar
- Nissan Qashqai
- Nissan Serena
- Nissan Silvia
- Nissan Skyline
- Nissan Sunny
- Nissan Terrano
- Nissan Terrano II
- Nissan Tiida
- Nissan Urvan
- Nissan Vanette
- Nissan W40-Bus
- Nissan X-Trail