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01-11-2012, 07:00 PM | #1 |
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Does this engine sound normal?
It's a 2010 35i. It might have been just started (cold).
see video: If I didn't know any better, it has some valve tap. The car only has 8k miles on it though. Just want to see if that slight tapping sound is normal. I'll likely be buying this car tomorrow. Thanks. |
01-11-2012, 07:08 PM | #2 |
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Not normal. Doesn't sound like mine
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01-11-2012, 08:17 PM | #3 |
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I would have to say mine doesn't sound like that on start up. It does sound like it has a tapping sound. Is the car from a BMW dealer?
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01-11-2012, 08:32 PM | #5 |
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The car is still under factory warranty if it is 2010. I would swing it by BMW before you buy it (if possible). If anything mine revs very slightly higher on start up and quickly settles into a "tap-less" idle.
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01-11-2012, 08:40 PM | #6 |
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I would have to say it does not sound like mine either. BUT, when you record with a phone, it tends to amplify some sounds more than others. It could be the injectors. Direct injection tends to have a soft ticking sound. Very hard to tell. Where is this car? Who is selling it? Will they let you have it checked over by BMW BEFORE you buy? Not to degrade the car, but for someone selling a nice car like ours, it looks pretty dirty! It looks like it just got back from a very long trip. See if you can have it checked first. Any reputable dealer or person would let you do that. Be cautious!
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01-11-2012, 08:40 PM | #7 |
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The really ironic thing is, I'm seeing two cars tomorrow -- a 2009 30i at a BMW dealer, and this 2010 35i at a Chrysler/Jeep dealer 15 minutes down the road. I'm leaning very heavily towards the 35i at Chrysler (more fully loaded, fewer miles, turbos ).... Which means that I likely won't be buying the 30i at the BMW dealership the very same day. And then before I buy the 35i, bring it back to the "loosing" BMW dealer to check out the "winner"?? Awkward!
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01-11-2012, 08:43 PM | #8 |
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Yeah, they just got it on the lot, and the sales guy took a quick video of the car for another customer. It's been to the detail shop since the video was shot.
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01-11-2012, 08:52 PM | #9 | |
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01-11-2012, 09:00 PM | #10 | |
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01-11-2012, 09:07 PM | #11 | ||
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Concerning the tapping, check out this video at 3:18 I can hear a similar very slight tapping sound. |
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01-11-2012, 09:12 PM | #12 | |
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Quote:
http://www.forums.bimmerfest.com/sho....php?p=6244018 Mine sounds the same.
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01-11-2012, 09:35 PM | #13 | |
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01-11-2012, 11:59 PM | #15 |
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Reading the other posts, it appears that they are talking about the E85/86 (Dates listed are 2006-2008), suspect this is some Vanos noise, some of which is normal. Did you get the car to fully warm up (oil above 80C) ? Did you check check the oil level - these motors are a bit sensitive on oil level, and will burn a bit if it gets into the upper half of the tach (which is where it also seems to work best).
I would also note that on which ever car you get not to close the trunk like a normal trunk lid, push it gently closed and let the electric pull down finish its job. |
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01-12-2012, 06:46 AM | #16 | |
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01-12-2012, 06:48 AM | #17 |
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Yeah, I saw the trunk thing to. That's the same goon who was revving the engine at the start of the video, which really made me cringe. I have no idea how soon after starting he did that, or how cold the engine was.. but geeze -- stop revving the engine -- I'm not racing you.
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01-12-2012, 08:58 AM | #18 |
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listening to an engine sound on a PC is not the best way to diagnose a problem, i did it twice and i dont think its sound different than mine, but ounce again its not like live listening.
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01-12-2012, 07:19 PM | #20 |
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Good call! But still, that's not a good noise.
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01-12-2012, 07:56 PM | #21 |
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SOunds exactly like mine.
I checked another in the dealership a year ago and it sounded the same. Dont know if its true but they said it was injector noise and perfectly normal.
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01-12-2012, 10:27 PM | #22 |
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Sooooo... I bought the 2010 35i today!
It was a VERY long day, and a remarkably ironic/funny/coincidence story between the two dealers. I'll have to write up a full report tomorrow or Saturday. The ticking sound was definitely there in person upon cold start -- but not as tinny as it is in the video.. and it was much less reduced once warmed up after a test drive, but still there. Thanks for everyone's answers to all my noob questions! But I have one super important question I haven't been able to figure out -- Where in the heck can you plug in a radar detector??? I could only find one socket in the armrest, and that's not going to work. |
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