Engine Knocking

Obed Owner/Technician Minneola, Florida Posted   Latest   Edited  
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Driveability
No Dtc Knocking After Oil Change

Hello Again We have this 2015 BMW with a N20 engine that out of the blue started knocking after oil change was done. I was reading that this engine has timing chain issues and also bearing problems Wtf just happen remove the new oil and metal particles are present is the and extended warranty thru BMW this POS engine?

any advice would be appreciated

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Caleb Diagnostician
Mishawaka, Indiana
Caleb Default
 

Maybe in the future try not to use run on sentences. It will help people better understand your question. So did you put in the correct BMW spec oil, filter, and quantity?? If so and the engine is truly knocking. Then it sounds like you need to see if BMW has an extended coverage. If not then quote an engine and explain to the customer that the engine is bad. How many miles between when you did…

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Irek Mobile Technician
Central valley, New York
Irek Default
 

What is the mileage. When you replace the filter did you change all the orings which the filter kit . What oil you used

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Raul Owner/Technician
Stuart, Florida
Raul Default
 

Wow guy above sounds like a know it all. Anyway what type of filter was on the car? Was it a cheap Chinese one? Make sure the stem is there and all the orings are on it. Where here to help not judge. If you need a pat on the back then don't respond, this supposed to be helpful.

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Obed Owner/Technician
Minneola, Florida
Obed Default
 

Tell me about it. Any ways we used Man filter, liqui moly oil , 5w40, 5.5 qrts I have been reading that this engine are prone to bearing failure but this one has 40k Miles.

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Gerald Manager
Birmingham, Alabama
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We have had two n20 cars come from another oil change place that the engine siezed or chains came unglued. I have heard thru grapevine there is some class action lawsuits against bmw on this engine. I don't know what is going on except maybe the timing chain is at the end of its life and lack of oil pressure for a few seconds causes the problem. This is what we have to deal with now just have to…

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Raul Owner/Technician
Stuart, Florida
Raul Default
 

bmwblog​.​com…bmw…

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Raul Owner/Technician
Stuart, Florida
Raul Default
 

Are the particles magnetic, if not then suspect bearing or timing chain guides. Put engine on TDC check timing marks on cams. If there off then most likely timing chain issue. Which would fall under class action lawsuit.

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Raul Owner/Technician
Stuart, Florida
Raul Default
 

Hopefully it was helpful

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Obed Owner/Technician
Minneola, Florida
Obed Default
 

Will do Thanks

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Dan Owner/Technician
Ingleside, Texas
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...ALL oil filters get sliced open and the paper stretched out BEFORE the new oil goes in at my shop...IF there is metal bits evident I start hollering at the customer right then and there just to CMA: a slicer is about 40 coconuts from Summit…​.​Dan H.

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Timothy Diagnostician
Evans, Georgia
Timothy Default
 

The timing chain guides and chain fail. The oil pump chain and guide fails as well. It sounds like the oil pump chain has failed. It will need an engine. With all of the news on the N20 engine, I would say it is not your fault. All of the failures I've seen have been N20's. I have not seen an N26 with any of the issues. Normally they start out with a whine noise and if not checked end up like…

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Obed Owner/Technician
Minneola, Florida
Obed Update
 

Hello again just and update. We looked at the old filter and in fact metal was all ready present inside the old filter contacted the local BMW dealer and shop foreman was not surprised with the situation he pretty much said to get in line and take a # with the rest of N20 engine that we have here. We are very thankful that they are willing to help. Vehicle is getting towed to the dealer will…

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Raul Owner/Technician
Stuart, Florida
Raul Default
 

Cool should fall under class action lawsuit

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