Pcv whistle bmw. Last edited by iendless; 08-29-2019 at 12:50 AM.
● Pcv whistle bmw We replaced the valve cover with one from URO parts and the problem is much less pronounced, but it's still there when the engine is warm. If I open the oil fill cap, the noise stops. However, there is another sensor that mimics the same problems. After they changed it and started it up there was a whistle. Whistle noise not PCV valve. I occasionally have a horrendous whistling sound which appears to be related to the PCV valve. My question is, what exactly is causing this sound and why? My mechanic wasn't clear (or doesn't know) with his explanation. However that did not fix anything. As you can see from my title I have a whistling noise that is coming from the valve cover and the cover needs replacing according to my mechanic. . I believe it is integral to the valve cover. This is the MAF sensor. I'll attached the receipt from BMW. If you have this whining/whistling noise link in the video and you open the oil cap (where to add oil to the engine) and the noise goes away or lessens, then it's your PCV valve/crankcase vent valve that's bad. I understand this to be normal behavior. The car also had to My 2011 E90 with the N52 has a whine / whistle at idle that's certainly related to the pcv system. When whistling, simply removing the oil filler cap temporarily stops the whistling. Opened hood, as soon as you open oil cap with engine still running, whistle goes away. That is the perfect description/diagnosis of a failed valve cover with the integrated PCV valve on N55 and some other BMW engines. It wasn't whistling before because the air was able to escape via the leaky valve cover gasket. 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. In order to recognize if your PCV valve filter is in need of replacement, watch for these below symptoms and warning signs: It is possible that the PCV valve can become stuck, failing to do its job to reduce harmful vapors from circulating in the engine. The shop said it's possibly a clogged crankcase ventilation valve. 2013 BMW x5 xdrive50i,I replaced both PCV Valves they where broken and now I'm getting a whistling noise after about two to four min idling , then if I removed the oil filling cap (lot of vacuum behind) the whistling goes away. As you can see from my title I have a whistling noise that is coming from the valve cover and the cover needs replacing according to my mechanic. I had done the flame test and it indeed was sucking in, and post repair it does not suck in anymore. Ive had this whistle for a few months, and replaced the PCV valve a few weeks ago, because that was the only diagnosis I could find online. After 7-8 years, the PCV/CCV on these cars will usually fail. Last edited by iendless; 08-29-2019 at 12:50 AM. Reason: SOLVED. My car is a 2012 F30 335i (N55), it has about 99,300 miles. hbbmicprurtukpjlircvyrvjvcwoaylhvershivfevhssiro