How a PCV Valve Works (For Beginners)
1:54
YouTubeThe 2-Minute Mechanic™
How a PCV Valve Works (For Beginners)
A PCV valve works by routing highly pressurized, toxic blow-by gases from the engine crankcase safely back into the intake manifold to be burned. This simple one-way valve relieves internal pressure to prevent blown engine seals and stop massive oil leaks. Whether you are doing your own maintenance or just want to understand your engine, this ...
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