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      04-21-2013, 10:54 AM   #1
skibuddy
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Engine noise - Possible problem?

Hi,

I've recently noticed that my engine (2.0D M-Sport Auto) seems noisier at rest over the last month or so. I've nearly had the car for 3 months now and done about 2500 miles. Today I popped the bonnet with the engine running and noticed a pronounced vibration/shake on the engine, at least more than I would expect. It was also much noisier than my previous E83 model and I think noisier than when I picked the car up from new.

Has anyone had a similar experience? I was thinking maybe the timing is out as the engine sounds like the tappets are noisy (... Forgive my lack of knowledge if there is either no timing problem possible of the engine doesn't have tappets these days ;-) )

I'm going to take it to the dealer for them to have a look but interested in others views in case it's a problem that has been noticed by others.

Judging noise is subjective and I guess we get used to our cars and notice changes more easily. It may be me but it also feels like the car sounds more harsh when accelerating but that may just be me getting used to the automatic gearbox.

Thanks
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      04-27-2013, 09:00 AM   #2
skibuddy
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Going into the dealer on Monday but still interested in opinions, thanks
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      04-27-2013, 09:27 AM   #3
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Probably worth checking out, but my experience for consideration. I'd had BMWs previously, but moved overseas and back and had a crappy rental for a couple months waiting for the X3. When I picked up the X3 I was amazed how quiet it was, but my comparison was the rental. Sometimes I'd think the engine was off, when it was still on. After driving it a couple months, though, I started to notice the sound of the engine, particularly at idle. Sounded like a diesel locomotive or something. Not really sure if it got louder, but I'm pretty much convinced I just got used to the quiet and eventually picked up on the new sound. On service, the dealer insisted it sounded perfectly normal. Have had no problems. Mine is a gas engine, though.
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      04-27-2013, 01:32 PM   #4
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Check that the hose from the air filter down the left side is connected and the crock clip is connected tightly
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      04-27-2013, 01:45 PM   #5
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Thanks for the comments. I'll check the air hose
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      04-27-2013, 03:28 PM   #6
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Mine seems the same to me - I've had mine 3 1/2 months. If its running okay normally through the rev range then I wouldn't be overly concerned. Could be a loose engine mounting bolt?

Hope it isn't anything serious. Keep us posted!
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      04-30-2013, 03:44 AM   #7
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Ours has done 12k and seems fine when at rest. So worth getting yours checked out.
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      04-30-2013, 06:05 AM   #8
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Hopefully there's nothing wrong, and it's down to the way we get used to things; what previously sounded really quiet starts to sound normal, and then we start to look for problems (I do anyway).

I recently just came back from a holiday in the US and we hired a Ford E350 minibus with a 5.4 litre V8 petrol engine. Not the most sophisticated vehicle I've ever driven and whenever you tried to accelerate the engine made a right racket. When I got back in my X3 with it's little 2 litre diesel engine, it sounded so quiet and smooth that I couldn't believe the difference. I've never been a fan of diesels but couldn't help thinking a good diesel would have suited the van much better.

Anyway, driving to work this morning, I couldn't help thinking that my engine had got a bit rougher and noisier than when I got back last week. After listening a bit more, I was of course wrong and it's just that I'd got used to it again, and I wasn't comparing it with the noisy lump in the van.

Like I say, hopefully yours will be fine but let's see if the dealer finds anything.
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      05-02-2013, 12:13 PM   #9
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Apologies for delay. Dealer had the car for the day and checked it. Nothing wrong and all normal. They said I wasn't the first person to report this. Their only explanation is that the newer lightweight engine casings (he said magnesium alloy) transmit noise much more than the older heavier engine blocks. Not sure whether this was a fob off but I suppose it makes some sense. I was given a ride into town after dropping the car off in a new 7 series 3.0d, which was a lot quieter but I guess the bigger engine would make a difference :-(

I think it's probably just me and I will retune my audio tolerance over the coming months and relax about it.
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      05-02-2013, 02:22 PM   #10
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Good to know that nothing is wrong.

I would think that a 7 series noise insulation would be a couple of notches above the F25's, so not too surprised to hear that.

Thanks for the update.
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      07-03-2013, 04:17 PM   #11
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I have had my 20D M Sport for about 6 weeks and I am still trying to get used to how noisy the engine is. I am told that the X3 diesel is not as quiet as in the saloons. I have previously driven a 20D saloon and it was much quieter.
One thing I think makes a difference is fuel grade. I used supermarket diesel and the engine seemed noisier than it is when filled with a named brand. I have also tried Millers diesel additive which raises the Cetane level and improves combustion apparently.
I certainly prefer the sound of my 330i, but I am getting used to the diesel.
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      07-03-2013, 05:03 PM   #12
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The engine is definitely noisy when cold. When warm, at idle it's pretty quiet, at least as good, or better than my previous renault scenic (1.9D). It is noisier when you put the foot down, but in a *nice* way, I have to say the noise at 3k RPM is pretty awesome, I didn't expect the lowly 2.0d diesel to have such a nice roar, it is a bit addictive :-)

One thing I noticed recently is a small "whistling" noise sometime, I thought it was linked to the aircon, but it doesn't appear to be, seems like the cooling fan or something. It seems to come and go, and perhaps it's linked to the external air temperature... Still trying to figure this one out...
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      07-03-2013, 05:41 PM   #13
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Buze, does the engine get quieter when run-in more? Mine has done 5000 miles now!
Sometimes I like the sound of the engine - I am considering having the twin tail pipe exhaust fitted. I don't know if it will change the engine sound, but the exhaust will sound more sporty.
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