labwork PCV Valve Heated Connector Tube Rubber Elbow for 02-08 Ford Ranger 3.0L

What is a PCV valve?

PCV abbreviation stands for positive crankcase ventilation. 
Gases are formed in the engine when fuel is burned, and most of them end up in the exhaust,

but some still manage to “escape” and reach the crankcase.
The PCV valve has the role to eliminate these gases from the crankcase

by recycling these gases into the intake and mix them with fuel to be burned in the engine.

Why is a PCV valve important?

Without PCV the engine will fail in time, also if you’re driving at high speeds the gases inside

the crankcase will cause pressure inside which will lead to damaged seals, blown gaskets, and oil leaks.

When to change the PCV valve?

This valve does not have an exact lifespan,The PCV valve can last over 100,000 miles,

but in other cases it can give up after 30,000 miles, if the driving is not ok, or the car is driven on short distances.

How do you check PCV valve?

Testing Your PCV Valve. The PCV valve is usually mounted in a grommet on a valve cover,

at the end of a hose or tube. One way to check whether a PCV valve is functioning is to remove

it from the hose or tube and shake it. If you can hear a metallic rattling noise, it’s likely in good working order.