Why is my PCV valve on my BMW not working?
This brings us to one of the most common issues that many BMW models faces over time, sometimes due to poor maintenance, and that is a failure in the positive crankcase ventilation valve ( PCV valve ).
When did the PCV valve system come out?
In 1961, the PCV valve system was rolled out to solve this problem by simply using the vacuum of the engine. It extracts blow-by gases from the crankcase, then pushes those gases down the intake manifold and back into the combustion chambers so they are fully burned.
What are the symptoms of a PCV valve failure?
With the valves clogging, or being stuck in the closed position, the symptoms might include: Increased pressure in the engine Oil seals/gaskets malfunctioning Leaking of engine oil Buildup of sludge and moisture in the engine Black smoke originating from engine
Where is the viscous fan on a BMW E32?
Viscous Fan. The Viscous Fan is mounted on the water pump shaft and is driven by the main belt from the crankshaft pulley. The assembly consists of a temperature-dependant viscous-clutch driven from the pump shaft that drives a large plastic fan.
What are the consequences of PCV valve failure in BMW?
This valve plays a vital part in the engine function, and therefore its failure might bring irreversible consequences to your BMW, shortening the functionality and the life span of your car when left unaddressed. What’s the PCV Valve? The PCV valve was designed to solve an engine related issue.
In 1961, the PCV valve system was rolled out to solve this problem by simply using the vacuum of the engine. It extracts blow-by gases from the crankcase, then pushes those gases down the intake manifold and back into the combustion chambers so they are fully burned.
How does the crankcase vent system work in a BMW?
The BMW crankcase vent system separates liquid oil from the air inside the engine and intake. When working correctly, oil is removed from the intake air and returned to the oil pan. Oil vapor remains and is burned up in the combustion chamber. Every car has some form of crankcase ventilation,…
What are the problems with the BMW CCV system?
BMW CCV system are notoriously failure prone, leading to high oil consumption, burning oil, loss of power, misfiring, and high carbon deposits. The problems are worse on the turbocharged models where the CCV needs to keep up with the pressure from the turbocharger(s).