1. Oil leaks. Oil leaks are one of the symptoms most commonly associated with a bad crankcase vent filter. The crankcase filter simply filters the blow by gases to make sure that they are clean before they are rerouted back into the vehicle’s intake manifold. Over time, the filter can get dirty and restrict the air flow, and therefore Check the Oil Filter Housing Gasket, Valve cover gasket, CCV, Oil cooler gasket (These will explain the blueish smoke). Oil pan gasket, the oil pan itself (look for damage), look around the oil level sensor for leaks aswell (this would explain the huge loss in oil). Valve stem seals will never let 1l go through in 100km.

Here's the CCV hack. BMW Crankcase Vent Valve (Cold Climate Version) - Genuine BMW 11617534237 is the cold weather CCV and 2 OEM hoses for $55ish. Then source the other 2 hoses, they can be aftermarket. +1000 x 1000. That's not even a hack its a genuine BMW ccv with 2 hoses for $56. Best deal you can find.

uncleruin Discussion starter. 88 posts · Joined 2014. #1 · Sep 7, 2014. BMW 3 Series 318i E46 manual petrol , 2003, (N42 engine 1995cc) Hi all, I am new to all these forums and such like, and to my first BMW car, so I have a lot to learn, and this is my first ever posting. The valve stem rubber seals on this car need replacing, what I need to

The CrankCase Ventilation valve is also known as CCV valve, PCV valve, or the oil separator. The CCV valve is found under the hood of your vehicle, and it is a fuel vapor recycler. The primary function of the crankcase ventilation valve is to recycle blow-by gases back to the crankcase to be reused, thereby preventing damage to your BMW’s engine.

The vacuum port on the CCV valve went to the fuel pressure regulator on the M52 engines--the M54 engine the port is capped off-----on the M54 engines the fuel pre--reg derives vaccum from the small vac hose that goes into the air intake duct--right after the maff--along side of the vac hoes for the jet suck pump kV5kH.
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    • bmw e46 ccv valve symptoms