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How to replace the PCV Valve with attached pipes.
For all M54 inline 6 BMW engines in any model. From 2000-2006
-About the PCV valve..
PCV Stands for Positive Crankcase Ventilation. It's job is to allow the crankcase to breath and allows the engine to re-burn fuel vapors caused piston blow-by. All while separating the oil vapors and returning them to the oil sump.
It uses a diaphragm to aid in this job. When the diaphragm brakes , it causes the engine to consume too much air. Which makes the engine run rough and set a check engine light.
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