panamamike
Posts: 121
Joined: Sat Jan 25, 2020 10:21 am

Re: Metal shaving in cylinder 2

Tue Feb 25, 2020 11:32 am

PBNB wrote:
Wed Jan 09, 2019 10:10 am
With 22,000 kms on our 2015 i3 Rex and about 1,300 kms of Rex use (and a good portion of that coming in the last 6 months after coding), the motor is still near new and breaking in! How much use does your Rex have on it?

I wonder why they would be looking in the cylinder?

Perhaps they were looking for something that they were expecting to find.

Did they pull the plugs and look inside with a scope. I have heard of techs cross threading spark plugs and then trying the drill and tap out the hole to put a heli-coil in. That can be a source for shavings.

Did they find metal shavings in the oil?

Where these steel or aluminum shavings? Knowing that could help determine where the shavings came from as this could be something that others might experience.
You'd think they would inspect the oil that has come out of the engine for metal particulates or is that wishful thinking?

panamamike
Posts: 121
Joined: Sat Jan 25, 2020 10:21 am

Re: Metal shaving in cylinder 2

Tue Feb 25, 2020 12:05 pm

When you said it was loud, how much louder would you say? Was it noticeably louder at even idle?

PBNB
Posts: 158
Joined: Sat Jul 21, 2018 11:28 am
Location: Vancouver, BC

Re: Metal shaving in cylinder 2

Tue Feb 25, 2020 12:16 pm

There is a company that does inspect the oil, I can't remember the name but it is a company that the diesel drivers use. I expect that BMW has already discarded any oil/evidence of the failure.

It is strange that this "mystery metal" issue has just come up again in another post.

I think the noise difference in the engine sounds like a top end issue or maybe some shrapnel is clogging up the catalyst as it gets pushed out of the cylinders. That probably would show up as a O2 sensor error and a check engine light.

Also, if the service tech scoped the cylinder they would not see much other than the top of the piston and cylinder wall. Most of the scopes don't have a head that can look backwards at ~180 degrees to see the valves. Maybe a fancy spy scope would do that :)

Or it could be a bit of aluminum stuck between a valve and the valve seat?
2015 i3 REX

panamamike
Posts: 121
Joined: Sat Jan 25, 2020 10:21 am

Re: Metal shaving in cylinder 2

Tue Feb 25, 2020 1:11 pm

PBNB wrote:
Tue Feb 25, 2020 12:16 pm
There is a company that does inspect the oil, I can't remember the name but it is a company that the diesel drivers use. I expect that BMW has already discarded any oil/evidence of the failure.

It is strange that this "mystery metal" issue has just come up again in another post.

I think the noise difference in the engine sounds like a top end issue or maybe some shrapnel is clogging up the catalyst as it gets pushed out of the cylinders. That probably would show up as a O2 sensor error and a check engine light.

Also, if the service tech scoped the cylinder they would not see much other than the top of the piston and cylinder wall. Most of the scopes don't have a head that can look backwards at ~180 degrees to see the valves. Maybe a fancy spy scope would do that :)

Or it could be a bit of aluminum stuck between a valve and the valve seat?
If it was actual metal, an easy test is to use a magnet and see if it picks up any particulates. If it's not clear the particles are metal, might need a fancier test.

jadnashuanh
Posts: 4990
Joined: Thu May 22, 2014 2:07 pm
Location: Nashua, NH USA

Re: Metal shaving in cylinder 2

Tue Feb 25, 2020 4:16 pm

Amsoil sells a kit for engine oil analysis. Don't remember the name of the lab that it goes to, but it's independent of Amsoil. When I was checking regularly, on one car, it found a slow coolant leak into the oil that was caught before there were other, obvious issues. It also verified that the synthetic oil could handle the extended oil changes.
Jim DeBruycker
2011 535i x-drive GT, 2014 i3 BEV
Soon (hopefully!) A 2021 X5 45e will replace the above

vreihen
Posts: 303
Joined: Tue Apr 30, 2019 4:55 pm
Location: Orange County, NY (FN21vm)

Re: Metal shaving in cylinder 2

Tue Feb 25, 2020 5:06 pm

I run samples every time that I change the oil in one of my ICE vehicles through Blackstone Labs:

https://www.blackstone-labs.com/

Their tests are thorough, and come with a personalized blurb explaining anything that looks abnormal.....
2015 BMW i3 BEV, Giga World, Tech and Driving Assistant packages, 15K miles

jfran2
Posts: 58
Joined: Tue Oct 30, 2018 4:20 am

Re: Metal shaving in cylinder 2

Sun Mar 01, 2020 5:44 am

Thanks, vreihen, for sharing that!

eNate
Posts: 438
Joined: Mon Sep 09, 2019 5:33 pm

Re: Metal shaving in cylinder 2

Sun Mar 01, 2020 11:40 am

Will they test samples from the refrigerant lines, too? :D
2 0 1 7   B M W   i 3   9 4 A h   B E V  O a k l a n d
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vreihen
Posts: 303
Joined: Tue Apr 30, 2019 4:55 pm
Location: Orange County, NY (FN21vm)

Re: Metal shaving in cylinder 2

Sun Mar 01, 2020 1:50 pm

eNate wrote:
Sun Mar 01, 2020 11:40 am
Will they test samples from the refrigerant lines, too? :D
That is actually a good question, and I guess there's one way to find out:

https://www.blackstone-labs.com/contact/



.
2015 BMW i3 BEV, Giga World, Tech and Driving Assistant packages, 15K miles

panamamike
Posts: 121
Joined: Sat Jan 25, 2020 10:21 am

Re: Metal shaving in cylinder 2

Mon Mar 02, 2020 7:48 am

eNate wrote:
Sun Mar 01, 2020 11:40 am
Will they test samples from the refrigerant lines, too? :D
Think if there's metal you're too late.

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