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04-09-2019, 07:28 PM | #1 |
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Knocking/fluttering sound at 2.5-3.5k
Hello my names Adam I was wondering if anyone had any information on what this might be, we just replace the rod bearings we were told that there were metallic particles in the filter and I personally have seen them my self I would assume the copper is from the old bearings and the other metallics are from other parts. How ever even after changing the bearing and flushing as much of the metal as we could I still get this noise I have videos and pictures to go along thanks !
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04-09-2019, 07:31 PM | #2 |
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Someone posted last week another car that had new bearings installed but not torqued down properly and it nuked the motor.. but that could be entirely different vs yours. But it doesn't look good for your engine just based on what you said.
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04-09-2019, 07:37 PM | #3 |
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Yeah haha I know that's what I'm so scared about because I got quoted a new motor for some where around 25k 😂 easy fix for some but not me quite yet , but how ever I will say after the bearings got done there's been no power loss or indicator lights just that fluttering noise I originally took it in for but it seems like the noise may have gotten quieter since they've gotten done still Dosent sound right to my ear 😢 it's odd to me how it'll make it on slow acceleration in gear or out but at idle sounds fine and when it get reved it'll sound fine just at that 2.5 to 3 mark
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04-09-2019, 07:41 PM | #4 | |
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s65 engine noise https://www.m3post.com/forums/showthread.php?t=1600807 |
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04-09-2019, 07:42 PM | #5 | ||||
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04-09-2019, 07:44 PM | #6 | ||
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04-09-2019, 07:47 PM | #7 | ||||||
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wfdeacon881105.00 |
04-09-2019, 07:59 PM | #9 |
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No clue how well you can hear it ... if I need to re take it or any clue on what I should do next I'm all ears cause I've had the car for 4 months 😢😢 and I got to take it out 2 meets, and I definitely paid to drive it more than 2/4 months I've owned it haha |
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04-09-2019, 09:22 PM | #10 | ||
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04-09-2019, 10:23 PM | #11 |
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I'm also in the DFW area and highly recommend Coulter (deansbimmer) at Mporium up in Mckinney as he specializes in ///Ms and could give you a proper diagnosis.
Last edited by tmak90; 04-09-2019 at 10:36 PM.. |
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04-10-2019, 06:34 AM | #14 |
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The engine mounts I got replaced with the rb's at a place called DFW Bimmer which seemed like a repeatable place and I mean they did the rod bearing replacement motor still runs strong just the fluttering noise, that originally came in with and after I had mentioned it I kinda got the vibe he was not wanting to touch it anymore ... making me think either he wasn't comfortable or my car was truly going down the drain but I figured if it was he'd tell me ... 🤷🏽*♂️ he said it was "normal" wear which it probably was cyl #7 i believe was the most worn he said
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04-10-2019, 06:36 AM | #15 |
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04-10-2019, 07:15 AM | #16 |
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04-10-2019, 07:57 AM | #17 | |
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04-10-2019, 08:08 AM | #18 | ||
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wfdeacon881105.00 deansbimmer3945.50 |
04-11-2019, 08:24 AM | #19 |
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Those bearings looked horrible, glad you got to them when you did. The S65's are a bit of an anomaly among BMW engines. They each have their own personality and sounds. Some are quieter than others, but the S65 is considered a noisy engine to begin with.
There are also BMW specialists, and ///M Specialists. S65's/S85's have a long list of quirks that most bmw "parts changer" shops are unaware of and where a specialist shop becomes advantageous. Happy to help a local! |
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wfdeacon881105.00 |
04-21-2019, 09:33 AM | #20 | |
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Secondly, what year is the car... I'm assuming 08-10? |
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