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Author [NL] [FR] [ES] [DE] [SE] [IT] [NO] [MY] Topic: Risk of premature degradation of Rocker Arm on F750/850GS. MC64011504  (Read 8671 times)

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Offline SnoDrtRider

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Re: Risk of premature degradation of Rocker Arm on F750/850GS. MC64011
« Reply #30 on: September 17, 2021, 09:56:52 PM »
*Originally Posted by Hommes [+]
Here is a link to the Video from my dealer. I hope it works ok.
Sorry the quality isn't very good, but you can see the kind of damage the faulty coating does to the cam lobes.

https://www.dropbox.com/s/0kj407pf177der4/20210917_211128.mp4?dl=0

Thanks!
I don't know where we are... but I have been lost here before...

Offline B0M0A0K

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Re: Risk of premature degradation of Rocker Arm on F750/850GS. MC64011
« Reply #31 on: September 17, 2021, 10:20:22 PM »
Worked just fine for me, thanks very much for posting!
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Offline MCMXCIVRS

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Re: Risk of premature degradation of Rocker Arm on F750/850GS. MC64011
« Reply #32 on: September 18, 2021, 04:32:17 PM »
I haven't noted any unusual noises from my engine, but plan to do a valve clearance check this winter and will be looking for any sign of this coating failure prior to the end of my warranty next summer.

Thanks for the visual on what to look for.

Offline Huge701

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Re: Risk of premature degradation of Rocker Arm on F750/850GS. MC64011
« Reply #33 on: September 18, 2021, 06:38:41 PM »
Thank you Hommes
was M&P your dealer ?
Huge701

Offline Hommes

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Re: Risk of premature degradation of Rocker Arm on F750/850GS. MC64011
« Reply #34 on: September 18, 2021, 07:08:20 PM »
Hi Huge.
No. I don't use them. I prefer dealers that sell and work mainly on BMW bikes.
M&P are multi franchise so work on lots of different bikes. 😉

Offline Huge701

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Re: Risk of premature degradation of Rocker Arm on F750/850GS. MC64011
« Reply #35 on: September 18, 2021, 09:29:35 PM »
No worries I was just wondering as they are the nearest to me ( hoping that they would be ready and aware Incase or when mine goes the same way ) seeing as you arenít that far away you must get a visa then to cross the border 😄
Hope yours is sorted soon
« Last Edit: September 18, 2021, 09:31:12 PM by Huge701 »
Huge701

Offline MitzaPCH

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Re: Risk of premature degradation of Rocker Arm on F750/850GS. MC64011
« Reply #36 on: September 19, 2021, 03:50:56 PM »
Im currently waiting for the dealer to check engine problems.
If they cofirm, am I entitled to ask for a new engine ? This seems like a really serious engine problem. Should i settle only for the repair ? What if the new engine pieces will fail again after 15.000km ?
My confidence in this BMW model is just below ground now.

Thank you

Offline Hommes

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Re: Risk of premature degradation of Rocker Arm on F750/850GS. MC64011
« Reply #37 on: October 08, 2021, 11:25:13 PM »
Got my bike back today after nearly 4 weeks at the dealer.  :164:
Engine is sounding much better now and that sewing machine clickety clack has gone. :001:
However, I have serious concerns about what happened to the bits of the coating that came off. Have they made their way into other parts of the engine and gear box?  Dealer thinks the oil filter would probably pick them up, but I'm not so confident about that.
Also, the same part number rocker arms have gone back in again, and I'm not as confident as my dealer that this issue will not reoccur. 
I have sent an email to BMW Motorrad UK asking for a response from the Tech department manager. I'm expecting to be told not to worry about it and if it happens again they will fix it. This approach is probably far cheaper for them than a full recall campaign. 
So, to recap. BMW Motorrad know there is a problem with the early rocker arms on the F850/750 GS. BMW Motorrad will only investigate if a customer complains of a ticking noise from top of engine (which lots of less mechanically minded people probably wont pick up on). If they find damage, they will replace the arms with the same suspect parts. :012: They don't seem to care about any possible damage that the lost fragments of the second hardest material known to man may cause to other parts of your engine or gear box.  :232:
If you are out of warranty, only qualified good will (whatever that is) will get you out of a very expensive repair bill. :157:


Offline SnoDrtRider

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Re: Risk of premature degradation of Rocker Arm on F750/850GS. MC64011
« Reply #38 on: October 09, 2021, 01:00:23 AM »
We have 2019 MY bikes and being aware of this issue I have carefully inspected both the magnetic drain plug and cut open the filters on both of our bikes (750 & 850) at oil changes which I performed at about 3,000 miles. We are overdue for our 12,000 mile services with 15,000 miles on the clocks but everything sounds good and the bikes ran great last week on a 1,000 mile trip while on vacation. I have one valve that is a bit louder than the rest but I am not concerned.
Once our riding season ends I will be performing a full service with valve check/adjustment as well as all fluids and filters, spark plugs, etc. plus batteries being changed for next season.
I don't know where we are... but I have been lost here before...

Offline B0M0A0K

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Re: Risk of premature degradation of Rocker Arm on F750/850GS. MC64011
« Reply #39 on: October 09, 2021, 04:19:43 AM »
*Originally Posted by Hommes [+]
Got my bike back today after nearly 4 weeks at the dealer.  :164:

Bloody hell! Bet that was all waiting for parts.

It sounds like the usual motor industry crap, reassuring and not reassuring that it's just as bad with non-uk companies.

Your job in documenting this for us here has been first rate and I really appreciate it (being a 2020 F750GS owner).  :047:

It sounds like the same old "they know there's a problem but don't want to admit it" bullsh#t. I know when I got my bike that I was more than a little shocked by some of the build quality. The factory exhaust just looked like it had been weld tacked rather than properly welded. Like many here, I was foolish enough to think that being a BMW mean something more by way of quality.

Did they have to drop the entire engine out to get to this or did they do it in situ?   
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