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Emory39 06-05-2019 10:14 AM

So I went over that thread, and what i got from it is that I might need to remove the valve covers to better clean the ccv "cyclone separators" on the underside of the valve cover. And replace the ccv valves again beacuse I noticed that the inner seal have a small piece of it mising.

Will that be the best way to follow the diagnosis?

stiubhartach 06-05-2019 10:42 AM

The 'cyclone' oil separator is in the M62 engine. Your N62 engine has a simple valve built into the head. There's no cyclone underneath.

The correct way to clean the valve is to remove the valve cover. I was lazy and cleaned mine by blowing carb cleaner down the hole and into the engine. Then I immediately changed the oil. This is NOT the correct way.

Here's more info with a good explanation of failures:


Underside of the valve cover:


14thbmw 03-22-2020 10:35 AM

So the parts for replacing the valves are now around $80 on ECS but a pair of aftermarket (new) on Amazon is $13.86. Anything wrong with the Amazon (Dade) item - it has good reviews?

Dade Set of 2 Crankcase Vent Valve PCV Pressure Regulating Valve Fit for BMW 11127547058 14506018001 https://www.amazon.com/dp/B01H027CUQ..._4D3DEbZ0RF4X9

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