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2. Schrader valve - Wikipedia

   en.wikipedia.org/wiki/Schrader_valve

   The Schrader valve consists of a valve stem into which a valve core is threaded. The valve core is a poppet valve assisted by a spring. A small rubber seal located on the core keeps the fluid from escaping through the threads. Using the appropriate tools, a faulty valve core can be immediately extracted from the valve stem and replaced with a ...

3. Core plug - Wikipedia

   en.wikipedia.org/wiki/Core_plug

   Core plugs are usually thin metal cups press fitted into the casting holes, but may be made of rubber or other materials. The most common metal plugs used in automotive engines are made from plated mild steels, stainless steels, brass or bronze. In some high-performance engines the core plugs are large diameter cast metal threaded pipe plugs. [3]

4. Crankcase ventilation system - Wikipedia

   en.wikipedia.org/wiki/Crankcase_ventilation_system

   PCV valve on Ford Taunus V4 engine (feeding from left side valve cover into the inlet manifold) A crankcase ventilation system (CVS) removes unwanted gases from the crankcase of an internal combustion engine. The system usually consists of a tube, a one-way valve and a vacuum source (such as the inlet manifold).

5. Oil pump (internal combustion engine) - Wikipedia

   en.wikipedia.org/wiki/Oil_pump_(internal...

   For simplicity and reliability, mechanical pumps are used. They are typically driven by mechanical geartrains linked to the crankshaft. Reducing pump speed is beneficial [b] and so it is common to drive the pump via the camshaft (if this is mounted in the cylinder block) or distributor shaft, which turns at half engine speed.

6. Tire-pressure monitoring system - Wikipedia

   en.wikipedia.org/wiki/Tire-pressure_monitoring...

   [12] [13] Metallic valve caps can become seized to their valve stems due to galvanic corrosion and efforts to remove these caps can break the stem, destroying the sensor. A similar fate may befall aftermarket brass valve cores installed in their stems by an unwary technician, replacing the original specialized nickel-coated cores.

7. Variable force solenoid - Wikipedia

   en.wikipedia.org/wiki/Variable_force_solenoid

   A valve spool that controls output flow and pressure; In the steady-state condition, the typical VFS design intent is to control pressure by balancing three axial forces: A spring force due to spring compression by valve position; A magnetic force primarily due to regulated current through the solenoid coil