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03-07-2020, 05:32 PM | #1 |
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2013 E70 M57Y loud clapping noise at idle w/ oil cap open
Original owner of 2013 E70 M57Y, 80K miles.
5K miles ago I noticed unusual light tapping noise coming from the engine bay (at idle) At first, I confused it with normal injectors sound, but over the time start getting worried (paranoid). Last night spend time searching forums and youtube for similar symptoms. I found this youtube reference (which suggests the noise IS NORMAL) At idle, it sounds like this: I find hard to believe that this type of noise is normal. (I also own 2016 F25 with N47D20O1 US which is silent with oil cap open) It would be great to get community feedback: 1. has anyone experienced this before? 2. can M57Y engine owners tell if they are getting similar sound with oil cap open? 3. can this be sound of slowly failing vacuum pump? Current Error Codes: None. Possibly relevant repair / maintenance history: At 36K injector was replaced due to 4B26 DDE: Zero-quantity adaptation, injector, cylinder 6. The very same code came back at 48K, then at 75K. Both times codes were cleared by BMWSF stealership with report of "nothing to worry about" Engine has no performance tunes (except swirl flap removal at 42K) 90% highway driving at 2.0K-2.3K rpms 10K OCI - BMW filter and LL-04 oil Replaced NOx sensors at 75K Thermostat is slowly dying (holds at 80C, scheduled for replacement in April) |
04-05-2020, 03:56 PM | #2 |
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Greck Yozh CvilleBill
I read your vacuum pump oil leak discussion here https://www.e90post.com/forums/showthread.php?t=1321450 Any of you experienced pump sound/noise like mine above? |
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