[XxThe_RemedyXx]

Decided to tackle the PCV diaphragm and cap replacement today. My car has approximately 58K miles on it. I didn’t really have any issues that would point to the diaphragm and cap, maybe a little more smoke from the exhaust than I would like. I did this more for maintenance and I’m glad I did. Once I removed the cap I immediately noticed tears in the diaphragm. When removing it, it completely tore off and disintegrated in my hands. I replaced it with the kit from BimmerNetwork. Fit of the diaphragm and cap were pefect. I put a thin bead of gasket maker around the inside of the cap perimeter for good measure. For those thinking of doing this, just do it.

[daveyfx]

Need to do this as well. I'm at almost 100k miles and suspect mine needs replaced.

The only indicator was I left my car idling with the heat on, for my dog to be comfortable. As soon as I left the parking spot, smoke billowed out everywhere, startling some coffee shop employees. There was also a faint high-pitched whistling noise, probably from the torn diaphragm.

After a minute of driving around, the smoke cleared up.

[XxThe_RemedyXx]

Originally Posted by daveyfx

Need to do this as well. I'm at almost 100k miles and suspect mine needs replaced.

The only indicator was I left my car idling with the heat on, for my dog to be comfortable. As soon as I left the parking spot, smoke billowed out everywhere, startling some coffee shop employees. There was also a faint high-pitched whistling noise, probably from the torn diaphragm.

After a minute of driving around, the smoke cleared up.

Definitely do it. Took less than 5 minutes. It’s weird because my diaphragm was visibly torn when I removed the cap, but I had no whistiling.

[Beet]

I did mine at 60k and it looked perfectly fine, like oem normal. I have a late production model so I’m assuming they maybe had a silent revision or it just goes car to car I guess.