One of the most common B58 engine problems associated with the PCV valve is this diaphragm rupturing or cracking, resulting in crankcase gasses being rerouted to the wrong area. This can result in oil-rich gasses being pumped into the intake manifold. BMW B58 PCV Valve Failure Symptoms. Smoke coming from the exhaust; Timing issues SeanC. 6012 posts · Joined 2007. #8 · Feb 23, 2009. I have been getting the exact same symptoms on my 5er. Cleaned the ICV (helped a little with the speed of the idle, increased it a little bit, but that's it), changed the O2 sensor, but the problem remains. The cause as found by my mechanic is a vacuum leak from the throttle body gasket in Replace the crankcase vent valve, crankcase vent hoses, and dipstick guide tube. E46 (3 Series) rear-wheel drive only Part Number Description Quantity 11 61 7 534 237 Oil Separator Repair kit 1 11 43 7 565 437 Dip Stick Guide Tube 1 11 15 7 532 629 Hose 1 E46 (3 Series) all-wheel drive only Part Number Description Quantity Symptoms of faulty CCV: - Engine drinking oil (as much as half a litre/month is typical). - Oil residue in the inlet manifold (remove your DISA valve to check). This is a job that most people who live in a cold/ish climate and own a 7+ year old e46 probably need doing, even Jump to content E46 DIY (Guides only) Existing user? Sign In Sign In Location: OC - SoCal. iTrader: ( 0) PCV/CCV failure - Easy Fix. My car is a 2012 F30 335i (N55), it has about 99,300 miles. After 7-8 years, the PCV/CCV on these cars will usually fail. The failure is due to the thin orange plastic membrane under the PCV/CCV cap, which is at the top of the Engine Valves Cover. PCV = Pressure Crankcase Valve. The obvious suspect is too much crankcase vacuum. I have read that high levels of crankcase vacuum can lower oil pressure due to the vacuum sucking oil out of exit points, and also resisting the oil pump's ability to suction oil up through the pickup tube. I am running 5/8 hoses and the pcv valve recommended in post#37 of the ccv delete thread. Yes, but the symptoms may be misleading. A vacuum leak in the the VC can cause idle issues and can lead to a loss of oil, which can be misconstrued as due to CCV failure. However, that the loss of oil is more likely due to a physical leak and is not being burned due to a failed CCV. Your evidence clearly indicates a VC leak. The valve itself rarely fails. Instead, it is the PCV valve’s filter that tends to impede the function of the valve. The filter is an essential part of the PCV valve, as it catches the majority of the toxins in the blow-by gases. Over time, however, the filter can become clogged. The PCV valve filter should be replaced after every 60,000 The best temporary to do is disconnect the pipe from valve cover to CCV open to let the pressure out of the crankcase and this should reduce oil leak (crank seals, dipstick seal, oil pan gasket, etc.). This high positive crank pressure can empty the oil if a seal finally busted, leading to ruined engine. G. - How to test the crankcase ventilation (aka CCV, CVV, PCV, CPV, & OSV) pressure regulating valve system & a video of oil separator quacking chubacca noise & vacuum leaks due to holes in one or more of the five CCV hoses or frozen or torn diaphragms & a clogged CCV causing pressure in the crankcase and smoke in the exhaust necessitating CCV j0k8SnL.