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04-11-2011, 05:33 PM | #1 |
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Bearing Failure....
2011 M3 DCT:
Have had numerous engine stalls as in completely shuts off...but starts right back up! This has happen 4X and they cant find anything. Also have the dreaded ticking/knocking syndrome. First visit to the dealership they did verify the noise. PUMA case started and engineer response was to re-tourque the bedplate bolts. This was done on the second visit. When I went to check on the status of my car, the technician was just returning from a test drive. He tells me that the ticking/knocking is gone. I wasnt so optimistic, so he says lets go on a test drive. We go on a test drive and I take the car behind a local grocery store where it is somewhat quite and a fence line to where we could easily here any noise. It took about eight passes at slow speed but it finally did it and the technician did once again confirm the noise. Technician elevates the PUMA case again and the engineers come back with: Wait for it....CHANGE THE CRANK SHAFT and BEARINGS!!! This of course has generated a third visit at which point the car is at the dealership now. The new Crankshaft and associated bearings arrived last week. As a side note: The second engineering response took less than 24hrs to receive. I have a feeling that the engineers understand that "SOME" S65 engines have substandard bearings!! My car has 10,831 miles clocked so far. I will keep everyone posted. |
04-11-2011, 06:20 PM | #4 |
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OP: Can you describe the ticking/knocking noise in more detail?
I had a similar sound with my car, BMW NA personally investigated and determined it was a low oil level (the Dealership had just performed 1st oil service and it was low). I don't have any answers, I'm just very interested to know more about it and whether it goes away with your new crankshaft and bearings. Subscribed. 1. At what mileage did you first hear it? 2. Is the sound audible on both sides of the engine or only at a certain rpm? 3. Did they mention if they had other cases? Thank you and I'm sorry to hear of your troubles!
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04-12-2011, 12:38 PM | #5 |
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I've got the same sound, took it to BMW they hear it then the tech later said he could not repeat it. I hear it daily now, could it be doing anything else harmful to the engine right now?
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04-12-2011, 03:23 PM | #6 |
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Damn sorry to hear that. Hope you get it all sorted out.
Can someone explain to me what this knocking/ticking noise is? Where and at what point in my drive would I hear it (assuming something is wrong)?
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04-12-2011, 03:57 PM | #7 | |
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Quote:
http://www.m3post.com/forums/showthr...light=click%2A |
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04-12-2011, 04:22 PM | #8 |
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That really blows man. I hope they do a quality job.
Best of luck
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04-12-2011, 04:44 PM | #9 | |
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04-12-2011, 04:54 PM | #10 |
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Most companies wouldn't even warranty this stuff, if you have to go behind a quiet grocery store to hear a noise like that then other brands will label you as nitpicking and deny the claim. BMW will spend thoudsands rebuilding your engine to make you happy though, even though the noise is probably within specifications.
Here's the kind of service you'd get from a typical brand: http://www.pistonslap.com/ Anyways your bearings didn't fail and the part isn't deffective, it's probably just a part that's within spec that's causing excessive noise.
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Clean cars are happy cars! CANON PHOTOGRAPHER Last edited by Legion5; 04-12-2011 at 05:00 PM.. |
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04-13-2011, 04:18 AM | #11 |
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BMW replaced the crank and bearings in my 07 e90 M3, and the knocking noise remained. In the end, Germany sent down a brand new 2011 engine which I'm just about finished running in. The noise is gone now.
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04-13-2011, 05:48 AM | #12 | |
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I think you're spot-on with the nitpicking thing. Good post
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04-13-2011, 06:01 AM | #13 |
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I'm sorry to jump in on your thread, but I also have a ticking noise near the left and right firewalls when it is running. I purchased the car with 16,000 miles back in october and now have 18,000 miles on it. The ticking has been there since I purchased it and I just assumed it was normal. I thougth it might be an emission control vavle ticking at idle like on my previous cars. Can someone please chime in if the tick tick tick tick sound I hear is normal. You are talking about a steady tick tick tick sound at idle right and not a random clicking like in this video? See below.
I really hope this is not against rules posting another users youtube link. I appologize if it is, but wanted to help out the OP.
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04-13-2011, 11:25 AM | #15 | |
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Cars are machines, made of many parts from many manufacturers, and sometimes somewhere along the line, they fail. Every part can't be tested by BMW for 100 of hours prior to being placed i your car, for no other reason then they will then be used parts with less life on them......that is life, that is reality. To the OP: sorry for your frustrations, but take this time to enjoy your slow loaner so that when you hop back into the ///M it will feel even faster Cheers, e46e92
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04-13-2011, 11:34 AM | #16 | |
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Cheers, e46e92
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04-13-2011, 04:32 PM | #17 |
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It has been good service in the end. The car has been with them for 3 months while they have been trying to get to the bottom of it - so I have been driving around in a M3 DCT for most of that time. Glad I didn't get the DCT!! Can anyone say "boooring!!!" Anyway, I had to say that!!
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04-13-2011, 09:22 PM | #18 |
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In my opinion, replacing a crankshaft and main bearings without pulling the engine and verifying that the main bearing bores are in proper alignment and are in spec for both roundness and taper is a waste of time.
Bearings almost always fail due to another issue which leads to the failure, very seldom is the bearing itself the problem. |
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04-13-2011, 11:04 PM | #19 | |
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Unless you're talking about an //M engine.
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Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."
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04-14-2011, 12:55 AM | #20 |
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I saw the bearings out of my old engine, there were buggered. The engine had done 30,000 kms. It was a July 2007 build, so it did have the bad bearings and crank that they changed from Nov2008 onward.
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04-14-2011, 01:40 AM | #21 | |
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Also check out oil analysis: http://www.m3post.com/forums/showthread.php?t=511940 Maybe you go through cars every 2-4 years, in which case you don't care. Some of us would like our cars to last a few years. Now we find out a care built after 10/2008 has bad bearings too??? Wasn't the new bearing part numbers suppose to fix this issue? And peopl complain about the car being in the shop because most are still making payments on the car but they are not driving the car because the manufacturer messed up. Is that unreasonable??? .
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Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."
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