Here is a better picture of the damaged chain rail.
Here you could clearly see the broken pieces,,,with the broken piece it wouldn’tclip together causing a timing chain rattle noise.
-
Recent Comments
vic san on N20 vanos unit broken Mark on N55 intake camshaft beari… JC on F30 A/C noise Jordan on New B engine mechanical water… jmiddle204 on X3 4×4 transfer case
bmwtechnician 
So I had the timing chain replaced in my car and got it back today. It has not power and is throwing 3 codes, they are P13C9, P052B, and P13C0. Any advice on what would be causing this?
LikeLike
First I would take the car back who ever did the timing chain repairs,,,,second the faults are intake and exhaust vanos camshaft stuck and timing issues,,,,sounds like something they did wrong with timing the engine with the new timing chain.
LikeLike
So would the timing be causing the VANOS issue?
LikeLike
Yes it could be the problem,,,they have to take the valve cover off and time the engine,,,they can check the vanos at the same time,,,the timing and vanos unit work all together
LikeLike
Did you ever figure out a solution to this? I’m having the same issue. Thanks!
LikeLike
I don’t know if they figured out the problem,,,never heard back from them on what fixed the car.
LikeLike
Hi, ive got a ’13 328 xdrive. Im attempting a timing chain replacement, and oil pump replacement. Does the oil pump come with the counterbalance shafts? and do i have to set the backlash on a new oil pump assembly? thanks so much for you help
LikeLike
hi, is separate oil pump cost 30% form the balance shaft.
LikeLike
No the oil pump does not come with the shaft,,,no back lash on oil pump
LikeLike
Mine broke at 76,000 mile! The rail shuttered and lost power while driving at 40 mph.
LikeLike
The one thing I can’t understand is why the oil pressure sensor doesn’t detect that the oil pressure is to low when the plastic pieces comes in to the oil pump inlet? Why the oil pressure warning comes only after the engine is destroyed? why not immediately just after the plastic pieces comes into the oil pump ?
LikeLike
The pressure is still there,,,but the amount of oil flow is restricted because of the plastic pieces but the pressure is still there.
LikeLike
OK, but if the amount of oil flow is restricted then I think the oil pressure should be also restricted? The n20 engine has some kind of intelligent oil pressure sensor as I read in TIS: https://www.newtis.info/tisv2/a/en/f10-528i-xdrive-lim/components-connectors/components/components-with-b/b6125a-engine-oil-pressure-temperature-sensor/Hios1lpe
The sensor gives data of exact current oil pressure in hectopascals (hPa) unit – I checked it in diagnostic software ISTA. Right after I pressed the gas pedal the data was changing
So if the oil pressure is insufficient then it should detect it? or this sensor isn’t sensitive enought to catch it and it works only if the oil pressure is really really too low?
In diesel engines there is a simple sensor that only measure if oil pressure is above 0,5 bar: https://www.newtis.info/tisv2/a/en/f10-520d-lim/components-connectors/components/components-with-b/b2008-oil-pressure-switch/XAAgjYU
So if the n20 engine would has this sensor I would understand why it wouldn’t catching the restricted oil pressure but it has this more advanced sensor about which I wrote above
LikeLike
Yes the pressure is still there,,,but the volume and amount of oil is less,,,there is a difference between pressure and volume,,,,you need both,,,,and the sensor can not detect volume just pressure.
LikeLike
Thanks for the answer. That’s very interesting. I will be reading about it to know more
LikeLike
Hi everyone, I have a 2014 production 428i N26 engine (80k miles). I have read a lot on the failure timing chain (rails). I’ll replace all of the require components (updated timing chain, oil pump chain, and rails. Since I will do such a maintenance, should I also the change the rod bearings or not necessary?
LikeLike
You could if you like,,,,you could also inspect the rod bearing once you have the oil pan off and see what condition the rod bearings are in and go from there.
LikeLike
Do you think it is safe to buy a 2013 X1 (E84) that has 120k?
LikeLike
No,,,I would stay away unless the timing chain was replaced.
LikeLike
I have found a very interesting video that says that the culpert in the timing chain failure is the HPFP. Basically he claims that fuel leaks from the seal of the HPFP into the oil which thins the oil down which in turn results in poor lubrication and chain stretching. This would explain a lot. Here is the link
The title is about the porsche macan but listen to the whole viideo and he talks about the BMW hpfp also.
Jim
LikeLike
Thanks for the video,,,that a interesting idea,,,,I have seen the HPFP leak into the engine and cause the oil to be diluted,,,,but I have yet to see one with a bad timing chain and the oil was diluted with fuel,,,,I’m not saying it’s possible but I haven’t seen that yet and cause a timing chain issue.,,,,anything is possible
LikeLike
What is weird about the timing chain issue is that it seems to be without a pattern or a typical millage that it occurs. Is there an simple way to check to see if the chain is getting more slack? I talked to our local BMW dealer and they say that they aren’t getting as many cars in for timing chains as they used to. I don’t know if people are going elsewhere to get it done or that they aren’t stretching as much
LikeLike
There’s no simple way to test the timing chain issue,,,the dealer can run a timing chain test which might help you,,,,but that test isn’t always correct.,,the other problem is that the timing chain rails start to come apart which you can not see.
LikeLike