BMW 7-yr/70k ELW on N26 timing chain + drive chain for oil pump per SIB 11 03 07 - Page 3 - Bimmerfest - BMW Forums



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  #51  
Old 09-16-2019, 10:51 AM
lyleswk lyleswk is offline
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I'm aware of that but since the VIN on my car has that part replaced under warranty, they wouldn't replace.
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  #52  
Old 10-06-2019, 11:13 AM
namelessman namelessman is offline
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This thread's post#25 says TC stretch does trigger CEL.

My thinking though is that frequent oil change and no heavy load(e.g. no heavy X3, no xDrive, no lead foot) just delay the inevitable failure, say, past 100k-150k miles.

"After the 2nd time clearing it, I now get a check engine light with the drive train malfunction. This time also now have 130E20 "Intake Camshaft offset angle to crankcase outside tolerance""

https://x3.xbimmers.com/forums/showt...1482736&page=2

Last edited by namelessman; 10-06-2019 at 03:56 PM.
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  #53  
Old 10-06-2019, 04:13 PM
namelessman namelessman is offline
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This is a Russian mechanic fixing the timing chain, what exactly is the TC failure rate of N20/N26 worldwide?

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  #54  
Old 10-10-2019, 09:41 AM
namelessman namelessman is offline
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FYI there is a thread from another forum that mentions a conference end of month among judge, plaintiffs, and BMWNA concerning the ongoing N20/N26 TC class action lawsuit.

https://f30.bimmerpost.com/forums/sh...614899&page=11
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  #55  
Old 10-11-2019, 02:44 PM
namelessman namelessman is offline
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Check out this video of the B58 teardown, the timing chain guard rail is shown around 6:25, and the top slide rail can be seen at 6:32. The slide rail is metal now and not likely to break apart like the N20/N26. Also there is no flimsy snap on tabs to connect slide rail and guard rail. These B engines should not have timing chain issues for a while.

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  #56  
Old 11-04-2019, 10:43 AM
namelessman namelessman is offline
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The other forum has a thread tracking the N20 TC lawsuit, there was a conference call among plaintiffs and BMWNA last Thurs, but details are not yet published.

"Full docket text:
Minute Entry for proceedings held before Magistrate Judge Cathy L. Waldor: Telephone Conference held on 10/31/2019."

https://f30.bimmerpost.com/forums/sh...614899&page=11
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  #57  
Old 11-14-2019, 11:02 AM
namelessman namelessman is offline
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Poster sjbender at the other enthsuiast forum posted an update to the class action lawsuit:. The activities on this case have picked up pace so maybe a resolution is near.

Full docket text for document 56:
TEXT ORDER: The Court will hold a telephone conference, to be initiated by plaintiff, on 12/12/19 at 2pm. Parties may contact chambers at (973) 776 7862. So Ordered by Magistrate Judge Cathy L. Waldor on 10/31/19. (tjg, )
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  #58  
Old 11-14-2019, 11:24 AM
namelessman namelessman is offline
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It is interesting to read that Honda 1.5L turbo has an oil dilution problem esp. in cold weather.

The symptom is that fuel can get through piston ring and into the oil pan, diluting the engine oil. Owners can also spell gasoline in cabin.

The net effect is that the oil viscosity can allegedly drop to 5% of spec, stripping the lubrication property of the engine oil.

Some Honda 1.5L turbo owners did 5k miles oil change and drained one extra quart out(total capacity 3.7 quarts), hence the dilution was real.

No one has complained on F30 forums that N20/N26 oil change has drained out extra capacity, so it is unlikely N20/N26 has this issue, but it loosely supports the argument that frequent OCI can be good for engine.
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