Crankcase problems

Crankcase: Lower part of the engine, it is where the oil needed for lubrication is stored.

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Metalic rubbing sound Solved

Volvo S60 2012 T5 sedan 67000 miles

My Volvo developed a metallic rubbing sound near the valve cover. The noise will go away if you take the oil fill cap loose. The PCV system is allowing a lot of vacuum inside the crankcase (engine).

cabinfourus from United States 8 months ago

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Same issue here

1 reply

Best answer (according to cabinfourus)

cabinfourus from United States 8 months ago

ALL of these cars have an o-ring/diaphragm that MUST be replaced about every 60k miles. It is located inside the oil filter housing. It must be removed from the vehicle, and taken apart to replace the diaphragm. Be careful not to break the plastics, as you take it apart.