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Author Topic: 1200 ADV Engine knocking noise  (Read 6313 times)

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Offline Gérrard

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1200 ADV Engine knocking noise
« on: August 05, 2011, 08:24:42 pm »
2007 model 68 000km. With the engin under load and up to about 2500 revs, through all the gears, the enjin emits a faint knocking noise, like that of a diesel motor.

Is this what I'm supposed to hear or is it something I should have seen to. Bought bike secondhand and don't know what its supposed to sound like. Idle, pick-up and acceleration is smooth. Fuel consuption etc seem good.
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Offline Crab

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Re: 1200 ADV Engine knocking noise
« Reply #1 on: August 05, 2011, 09:22:52 pm »
you can ride my slightly older model sometime to compare
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Re: 1200 ADV Engine knocking noise
« Reply #2 on: August 05, 2011, 09:26:17 pm »
Hey did not know you had a ADV stallion in the stable as well! I must say I mis mine sometimes ... but mostly on the long lazy cruises.

You will probably get alot of 'they all sound like that, sir' replies but probably best to try and borrow another one and compare. My guess would be that it needs a good tune up - set tappets AND endplay ... plus TB ballance. Or is this all in order? I must say though boxers are notorious for strange noises!
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Offline buzzlightyear

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Re: 1200 ADV Engine knocking noise
« Reply #3 on: August 05, 2011, 10:07:29 pm »
driveshaft?
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Offline Gérrard

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Re: 1200 ADV Engine knocking noise
« Reply #4 on: August 05, 2011, 10:09:02 pm »
you can ride my slightly older model sometime to compare

Thanks Crab, would like to do that. Think I,m just sensitvie as I'm used to my super quiet AT.
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Offline Gérrard

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Re: 1200 ADV Engine knocking noise
« Reply #5 on: August 05, 2011, 10:14:02 pm »
Dom. All that supposed to be done when I bought the bike. The noise is faint and does not sound like its hurting. Remember I'm used to noisy Airheads and the noisier the happier. I don't know these enjins and what they're supposed to sound like.

Buzz. Noise definately from the enjin/pods, like when an enjin would ping, but rather the faint diesel knock.
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Offline fixit

Re: 1200 ADV Engine knocking noise
« Reply #6 on: August 05, 2011, 10:17:25 pm »
J, I hope it's not what i think it is. The way you explain it, it sounds exactly like a big end knock.
That being the case, the previous owner either cooked the motor at some point or ran low on oil.

I know that sound....been there got the T-shirt.
 

Offline Gérrard

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Re: 1200 ADV Engine knocking noise
« Reply #7 on: August 05, 2011, 10:20:18 pm »
Hey did not know you had a ADV stallion in the stable as well! I must say I mis mine sometimes ... but mostly on the long lazy cruises.



Recently acquired. As we get older the objectives change and I felt like getting a fresher touring bike( for those lazy cruises). Would have loved a HP2, but still have to consider my pillion. Love this bike though. Gives a good feeling when I ride it and handles tricky off-road remarkedly well.
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Offline Gérrard

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Re: 1200 ADV Engine knocking noise
« Reply #8 on: August 05, 2011, 10:24:36 pm »
J, I hope it's not what i think it is. The way you explain it, it sounds exactly like a big end knock.
That being the case, the previous owner either cooked the motor at some point or ran low on oil.

I know that sound....been there got the T-shirt.

I think and hope I'm just over sensitive. Not really what I want to hear of course, but have to know. Wil first try to compare with other bikes, then check further. As Dom said, already been told its normal. Maybe it is. All enjins have their quirks, I hope.
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Offline fixit

Re: 1200 ADV Engine knocking noise
« Reply #9 on: August 05, 2011, 10:41:25 pm »
Yip, I felt the same way. Ran the bike for a couple thousand kays with that knock. Everyone I asked said it's normal, don't worry, you should hear some other what they sound like...so I just kept on riding.
Slowly but surely the noise got louder, so I eventually decided to strip it down. WTF!!!!
I couldn't belive what i found. The big end was seized fast to the crank. I had to have it machined off! It was obviously like that since I got the bike and who knows how long before.

I wish you the best, but don't leave it. Get someone to check it out properly. The only sound you should hear is a bit of valve/rockers clicking. Nothing else.
 

Offline Gérrard

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Re: 1200 ADV Engine knocking noise
« Reply #10 on: August 05, 2011, 10:51:19 pm »
As I have it the big end would make a continious noise and get louder as you rev up ? The noise I get is faint and goes away as the enjin speeds up or the load is taken off. Its only at low revs. At speed, if I accelerate hard, there is no noise.
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Offline fixit

Re: 1200 ADV Engine knocking noise
« Reply #11 on: August 05, 2011, 11:04:02 pm »
Exactly what mine did. No load, no noise at all. The heavier you roll it on the louder you can hear the knock. Not loud at all, but you can hear it.

You should get someone ( with a bit of mech knowledge) to stand on the side of the road, then ride past under hard acceleration and then ask their opinion?  :eek7:
 

Offline Gérrard

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Re: 1200 ADV Engine knocking noise
« Reply #12 on: August 05, 2011, 11:13:09 pm »
Exactly what mine did. No load, no noise at all. The heavier you roll it on the louder you can hear the knock. Not loud at all, but you can hear it.

You should get someone ( with a bit of mech knowledge) to stand on the side of the road, then ride past under hard acceleration and then ask their opinion?  :eek7:


Thanks. Will do that.

Got to mention though, I bought the bike from a reputable and experienced BMW mechanic who I trust will not sell a bike out his shop that might be suspect. He assured me the noise is normal. I'm just curious I guess. I need to know what sounds right, so I can hear when something goes wrong.
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Offline Tonteldoos

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Re: 1200 ADV Engine knocking noise
« Reply #13 on: August 06, 2011, 07:44:18 am »
If it knocks open da door...  :peepwall:
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Re: 1200 ADV Engine knocking noise
« Reply #14 on: August 06, 2011, 10:52:09 am »
Any exstra vibrations when you hear the noise?
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Offline Gérrard

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Re: 1200 ADV Engine knocking noise
« Reply #15 on: August 06, 2011, 01:22:37 pm »
Any exstra vibrations when you hear the noise?

None. Enjin, pick-up, etc as smooth as silk.
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Offline Schlowy

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Re: 1200 ADV Engine knocking noise
« Reply #16 on: August 06, 2011, 06:36:38 pm »
chance is that your bike pinging i.e . too lean mix , from what we nether 2007 models had this issue which was "cure "by BMW in 2008/9 and then the 2010 model start is all over again ...
 

Offline Brakenjan

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Re: 1200 ADV Engine knocking noise
« Reply #17 on: August 06, 2011, 07:02:43 pm »
Geluk met die GSA Jupiter!!  :thumleft:

Hoop jou bike is oraait. Koop miskien een van Boer se plug-thingamajieks ek kyk of dit nie die probleem oplos nie?
 

Offline Gérrard

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Re: 1200 ADV Engine knocking noise
« Reply #18 on: August 06, 2011, 07:14:44 pm »
Thanks for the replies so far. Rode a friends 2006 GS today. Has the same noise, just not as pronounced as on mine. Beginning to think its rather a problem with enjin settings as suggsted before. Taking two late model GSA's for a ride tomorrow to compare further.

Thanks Brakkies. Sou nie omgegee het as dit 'n HP was nie, maar moet op die stadium nog bedagsaam wees teenoor my pillion. Sy beurt sal nog kom, dan hoef ek nou nie meer soos 'n genooide gas daar in die Lounge te voel nie.
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Offline Duke916

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Re: 1200 ADV Engine knocking noise
« Reply #19 on: August 07, 2011, 02:25:48 pm »
Yip hulle klink of hulle nok met wegtrek of swaar trek in n rat met lae revs  :thumleft: Het ook niks verander met daai booster kabel  :deal:
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