01-13-2019, 01:23 PM | #1 |
David
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Oily line/valve, anybody know what this is?
I have this piece in the front of the engine bay, closer to the coolant overflow.
It's covered in oil, was curious as to what it was because my warranty is ending in a few months and trying to see if it needs replacement or not. Thank you |
01-14-2019, 07:26 AM | #2 |
First Lieutenant
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It looks like the PCV line. Might have to pop the upper cover off to confirm, but the PCV runs form a port on the intake down to the charge pipe. It vents oily air from the crankcase under boost.
Take a look at the "328d CCV Oil Catch Can" thread. That thread has pictures of that pipe removed for a catch can. Just be careful with it if you remove / inspect it, it cracks really easily. (Dont ask how I know that!) |
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01-14-2019, 11:34 AM | #3 | |
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Drives: 328d Wagon, M2 Comp, i4 eD35
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01-14-2019, 06:51 PM | #4 | ||
David
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Thanks guys, i'm not sure whether to clean it and live with it, or just have the dealership do it & possibly make a tighter connection with the metal bands lol.. Either way if it's just the PCV outlet I can live with it |
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01-14-2019, 11:05 PM | #6 |
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The rest of us that have commented in this thread have put a catch cans in place of it to reduce the fouling going into the intake. You'll need to remove that though when you get your car smogged. I can swap mine in and out in 10-15 minutes though.
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01-14-2019, 11:50 PM | #7 |
David
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I don’t care enough to install a catch can honestly. It’s a diesel and a little oil vapor can’t hurt. Not as necessary as a gas engine. Plus I’m not the original owner and no idea of the carbon build up. If I ever get the carbon removed I’ll install one
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