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07-14-2019, 08:40 PM | #23 |
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I think that with time and mileage on S65 timing chain stretches ,plastic chain guides wear out ,hydraulic tensioners do not hold pressure(bleed out)and that combined makes rattle and clank on cold startup.Tensioners are easiest to replace(may not fix noise),chain and guides are project.
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07-14-2019, 08:40 PM | #24 | |
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Our S65 bearings that's our spooky nightmare => https://www.m3post.com/forums/showthread.php?t=786615
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07-14-2019, 08:45 PM | #25 | ||
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But I do wish I knew exactly what is causing it so at least I knew... would be one less thing to worry about even though it's a total champ on the road thus far. |
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07-14-2019, 08:46 PM | #26 | |
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07-14-2019, 08:49 PM | #27 | |
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07-14-2019, 08:52 PM | #28 | ||
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07-18-2019, 05:53 PM | #29 |
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finally got a video of what mine does occasionally. This was leaving the office, I had driven it around 1pm, left around 5pm when the noise happened. it also happened at 1pm but I didn't get a video. it's only after sitting for a few hours, but not always. Hot day. Oil is full... Also have the cowbell noise with driveshaft, not sure if that's related but doubt it.
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07-18-2019, 05:55 PM | #30 | |
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07-18-2019, 06:00 PM | #31 | ||
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07-18-2019, 06:03 PM | #32 | |||
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07-18-2019, 06:26 PM | #33 | ||||
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07-18-2019, 06:36 PM | #34 |
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My last e90m3 had a cold start rattle at 69k miles. I daily drove that car, and it happened every morning. I bought 2 new timing chain tensioners, but never got around to installing before the car was totalled.
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07-18-2019, 08:44 PM | #35 |
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LOL.... I read that and was anticipating some amazing information... then... #Crushed
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07-18-2019, 08:58 PM | #36 |
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My car did that once on the first start after I'd changed my own rod bearings, as you can imagine I about shat myself. It's definitely at external motor noise, my thought was something to do with the belt/tensioner since I had just put it back on
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07-18-2019, 09:28 PM | #37 |
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You think if I take it into my Indy they will be able to diagnose without hearing it in person? I don't know what to do... it doesn't do it on demand and I just don't know enough about this motor to be able to direct anyone to a potential cause.
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07-29-2019, 09:00 AM | #38 |
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Updated in original post.
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08-15-2019, 01:26 PM | #39 |
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You shat yourself ? How's your driver seat ?
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08-15-2019, 08:50 PM | #40 | |
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08-16-2019, 05:06 AM | #41 |
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Cheers my friend !
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