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10-20-2012, 10:36 PM | #155 |
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Today I remotely recovered an ECU on a car in Malaysia. The owner of the car took it to a local shop there for an update, and wound up with a non-starting car. He then attempted the update himself, and it was the same result.
The car has 28,xxx KM on it. After I repaired the code in the DME, I could hear the noise through skype as the car fired to life for the first time in a week. Just another example of this on a low mileage car, on the other side of the globe. Shows this is not an isolated incident.
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10-25-2012, 11:04 AM | #156 |
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So I took two videos, yesterday and this morning of cold-starts. Yesterday's video was taken at 4 pm in 70 degree weather after the car was parked since 8:30 am on flat surface. I have to report no noise was detected.
This morning's video was completely different. In my previous posts I stated I had no grind and noise on a a flat surface. FormulaMMM, you were right, while it might have been a lubrication issue in the beginning, it is now not the case anymore, you were right. The car started just like it does every morning BUT there was chain noise followed by a grind. It was fairly cold outside and raining, I would say low 50s. I will call my SA today and start conversing about this issue, I just don't want to show up blindly at the dealership. M3PO thank you for posting your service records, they will come in handy. Morning video, listen RIGHT after the 5 sec mark:
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10-25-2012, 12:13 PM | #157 |
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Wow... that's considerably louder than mine.. looks like it hesitated a little more on start too.
Thanks for posting and let us know what they say... So far I have not heard back from my dealer on it.
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10-25-2012, 12:43 PM | #158 | |
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So I just called my SA and he said to email him the video and the M3PO service records posted in this thread and he has me scheduled to come in next Tuesday at 8am. I will report next week on what happens. I will also take another video over the weekend with the car on an incline and this time phone inside engine bay for better clarity.
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10-25-2012, 01:41 PM | #159 | |
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10-25-2012, 02:39 PM | #160 | |
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10-25-2012, 02:42 PM | #161 |
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Took another one today - right @ 5 seconds you can hear it. Door was open for the sound to come in. Ignore the chinese you hear at the end of the video, that's my dash cam booting up
I spoke with the shop foreman and service manager today, they said they will be looking into it and will get back to me. Other than that, the car runs incredibly strong. Had a chance to drive it yesterday in 60 degree weather (it's been 80+ here recently), and it was nothing short of a beast. Amazing what a little colder weather will do.
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10-25-2012, 02:54 PM | #162 |
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IMO benvo that's totally norma. and you say the car runs fine. I have looked and numerous m3 as well as reg bmw and all seem to have a little rattle while cold.
Ever hear a car start after an oil change?? For a second it sounds like marbles in a can until the head is pressurized. I'm sorry but I really don't get these threads. My car makes a noise, but runs great so I am going to the dealer with M3posts threads and demand they look at it. Just freaking drive the cars. When they break, then fix them At worst we are hearing an exaggerated rattle from the chain tensioner while the car is cold and the heads are dry as the oil is sitting in the pan. I've asked before, where are people parking there cars? inclines may exaggerate the issue. I would keep an eye on it, but if you're not hearing the noise while driving the car and it runs fine, who cares? |
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10-25-2012, 03:05 PM | #163 | |
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My car is parked on a flat surface at home. I rarely park on an incline overnight, so I am unsure as to if this exacerbates the issue or not. If the car breaks, I would obviously fix it. But I would rather be the burden of this repair be on BMW instead of my wallet, particularly if there is some correlation between the repairs needed and this noise. I'm not running to the dealer with threads and demanding they fix anything. Ignoring it is not really a realistic scenario unless ALL cars do it and BMW claims that it is normal and can specifically say WHAT is making the noise, or what is causing the noise. I would prefer that the dealer rip my vanos apart and replace whatever is causing that noise, even though the car runs like an absolute dream with zero problems. I would chalk it up in my head as preventative maintenance.
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10-25-2012, 03:11 PM | #164 |
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ever hear the old adage, "if it ain't broke don't fix it" I think that should apply here. I believe the few incidents we see to be isolated and now (psychosematic (sp)) kicks in and everyone hears noises. My e46 rattled and never gave an issue. In fact these older bimmers were issue enough for BMW to release a statement reqarding normal vanos noises and what was normal and what was excessive. This is nothing new. In fact a good test is to rev the car up steady to like 3k and listen for a rattle by the front of the head. All these cars make noises, some more than others.
If anyone wants to test my theory, when the car is cold, pull the fuse for the fuel pump and crank the engine for 15 sec to build oil pressure and then replace fuse and start the car. See if you still hear the rattle. IMO I would be pretty hesitant to let BMW rip apart the top end of the car due to some excessive noises espeically if the car drives fine and hasn't thrown any codes yet. |
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10-25-2012, 03:26 PM | #165 | |
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10-25-2012, 06:34 PM | #166 | |||
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Fact is, BMW has recognized in a few cases that it is an issue and fixed under warranty at great expense. It's not just another "normal" noise. Quote:
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10-25-2012, 07:13 PM | #167 |
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Yes, always like that long when its cold
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10-25-2012, 07:54 PM | #168 | |
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oh really, thanks. You really starting to sound like to 25 yr old tool you prob are. look at what I bolded; ironic huh? what's more speculative? |
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10-25-2012, 08:39 PM | #169 | |
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10-25-2012, 11:18 PM | #170 | |
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10-25-2012, 11:48 PM | #171 |
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If I start my 2013 M3 E92 and it makes a strange noise, I will document it with sound and video. Sounds like the best way to go, instead of trying to explain it to the mechanic by waving your hands and making strange noises with your mouth! One picture (video) can be worth a thousand words in the strange noise arena! Good stuff M3 lovers. If I ever hear that sound, I might know what it is.
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10-26-2012, 10:55 AM | #172 |
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So, I started my car this morning in 60 degree weather after leaving it in the driveway overnight (usually in the garage). The sound was much louder than what's been posted here so far. Very noticeable from inside the cabin with the door open.
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10-26-2012, 11:40 AM | #173 |
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I started my car today after it sat for a day and I can definitely hear the sound. I do not think this is normal as the sound was not there before. Something must have worn over time for this to develop and I am afraid it will develop into something more serious down the line as Mike said. Would be nice to be able to get to the source on this as I plan to keep the car for a long long time.
From a few members posted above, it seem that the sound is fixed when the vanos cam gears are changed. So I am assuming that's the source of the sound? Looking at some of the pictures of the s65 builts and the service manual on adjusting the timing on these engines, it seem that the timing is only locked by the tension on that one bolt going through the cam gears into the camshaft. Can some folks that have worked on this engine confirm? If that's the case, would this rattle over time risk knocking the timing off on the engine? The sound is very loud and violent if I let the car sit for 2 or more days. For the time being, just mean I have to drive it every day! |
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10-26-2012, 01:02 PM | #174 |
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Look at the part that I bolded. Now THAT's irony.
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10-27-2012, 05:42 PM | #175 |
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Started the car right now, on an incline in my driveway. Weather is 79 degrees and no rattle or grind. Car was left to sit from 2am last night. This problem must only relate to a true cold start, not just engine temp. We'll see what the dealer says Tuesday...
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10-27-2012, 06:16 PM | #176 | |
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The few times this happens to me is when it's cold AND when the car has been sitting for over a day. And even then it's not as loud as some of these videos. Good luck and keep us updated.
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