[kghazen]

Hi all,

First post here in awhile but I figured I share my pain. I recently bought a new 2024 G87 M2 (manual) from a dealership in Pittsburgh. After gently breaking in the car and having the first oil change done at 1,200 miles, everything seemed great up until around 4,000 miles. After taking the car on a short day trip the prior day, I started the car to see a CEL had popped up and the car started to run rough (like shaking the car rough). The car did say I could continue to drive but I quickly shut it down and started diagnosing with my cheap OBD 2 port reader to find a cylinder 5 injector failure code. After driving it to the same BMW dealership to diagnose further, they reported back that they found that injectors 5 & 6 had both failed and both had somehow leaked coolant into the cylinders. At first, the dealership was tossing around the idea of replacing the engine, but after successfully replacing the injectors and pressure testing the system (Both the CEL and rough running are fixed) they are now suggesting test drives.

Has anyone with the S58 engine experienced issues like this? What questions should I be asking the dealership to make sure we are not missing anything?

[Tag]

Originally Posted by kghazen

Hi all,

First post here in awhile but I figured I share my pain. I recently bought a new 2023 G87 M2 (manual) from a dealership in Pittsburgh. After gently breaking in the car and having the first oil change done at 1,200 miles, everything seemed great up until around 4,000 miles. After taking the car on a short day trip the prior day, I started the car to see a CEL had popped up and the car started to run rough (like shaking the car rough). The car did say I could continue to drive but I quickly shut it down and started diagnosing with my cheap OBD 2 port reader to find a cylinder 5 injector failure code. After driving it to the same BMW dealership to diagnose further, they reported back that they found that injectors 5 & 6 had both failed and both had somehow leaked coolant into the cylinders. At first, the dealership was tossing around the idea of replacing the engine, but after successfully replacing the injectors and pressure testing the system (Both the CEL and rough running are fixed) they are now suggesting test drives.

Has anyone with the S58 engine experienced issues like this? What questions should I be asking the dealership to make sure we are not missing anything?

Injectors have nothing to do with engine coolant. Sounds like you might have a blown head gasket that causes the leak and could have fouled the injectors. Replacing them does not answer the question of how coolant got into the cylinders.

I would request they send the oil for analysis and also check the oil filter for any metal. In addition, request another compression check be performed. Have both performed while you're there to validate and would ask them to also give me an oil sample to send in for independent analysis myself.

A new engine and labor involved is very expensive to replace and if you have issues after the warranty is out that require a new engine the car is basically totaled. You could also ask them to give you a 10yr warranty on the entire powertrain.

[rons e92]

Like the other poster said, you don't get coolant into the cylinders without a blown headgasket or worse, a cracked in th water jacket on the block of head.

This is a very serious issue and I would not take swapped fuel injectors as a fix. You could have serious damage to the internals of your engine.

Bring it to an Indy shop that specializes in BMWs and get an oil analysis done.

Personally, I'd be trying to exchange it for a new car.

[techwhiz1]

I'm not sure how you leak coolant into cylinders from injectors. Coolant and injectors have absolutely nothing to do with each other. One is fuel delivery and the other is engine cooling and passenger heating.

The only way to get coolant into the cylinders is with a blown or leaky head gasket.

If they say your oil was contaminated by fuel from Leakey injectors that would make sense.

The N54 had all kinds of injector issues.
The fact that it's a "new" 2023 means that it possibly sat with fuel and you have fouled injectors from gas sitting.

I'd want to oil analyzed. I'd want them to change the plugs and do a leak down test and a pressure test on the cooling system.

[M3PGH]

Can I ask you where you got your car fixed? I’m also in Pittsburgh with a 2024 M2 bought new. Car has had pretty consistent long starts that have been seen in a sunset of s58 motors that is caused by a leaking injector. Took my car to dealer that I bought it from with multiple videos and service logs from other s58 owners who had same issue that dealer resolved and the dealer came back with nothing. Still having this issue to date. Mine does not cause CEL or any misfire but does cause a pretty dramatic long start with a puff of smoke

[M_Power Rob]

Originally Posted by M3PGH

Can I ask you where you got your car fixed? I’m also in Pittsburgh with a 2024 M2 bought new. Car has had pretty consistent long starts that have been seen in a sunset of s58 motors that is caused by a leaking injector. Took my car to dealer that I bought it from with multiple videos and service logs from other s58 owners who had same issue that dealer resolved and the dealer came back with nothing. Still having this issue to date. Mine does not cause CEL or any misfire but does cause a pretty dramatic long start with a puff of smoke

You need to contact NA.

[Ronin76]

Originally Posted by kghazen

Hi all,

First post here in awhile but I figured I share my pain. I recently bought a new 2023 G87 M2 (manual) from a dealership in Pittsburgh. After gently breaking in the car and having the first oil change done at 1,200 miles, everything seemed great up until around 4,000 miles. After taking the car on a short day trip the prior day, I started the car to see a CEL had popped up and the car started to run rough (like shaking the car rough). The car did say I could continue to drive but I quickly shut it down and started diagnosing with my cheap OBD 2 port reader to find a cylinder 5 injector failure code. After driving it to the same BMW dealership to diagnose further, they reported back that they found that injectors 5 & 6 had both failed and both had somehow leaked coolant into the cylinders. At first, the dealership was tossing around the idea of replacing the engine, but after successfully replacing the injectors and pressure testing the system (Both the CEL and rough running are fixed) they are now suggesting test drives.

Has anyone with the S58 engine experienced issues like this? What questions should I be asking the dealership to make sure we are not missing anything?

I am also in Pittsburgh. Is your dealer located on Baum Blvd? That is where I will be getting my car from. My experience with them has been great so far...hoping it continues after purchase as well.

[DrewNewM2]

Sorry to hear this OP. Seems like a rare occurrence. I would “test drive” if for a while and like others mentioned then have them do another full evaluation, compression, leakdown, oil analysis, etc. If anything is off, push for a new engine or buyback or something like extended warranty. Just stay on top of them. Document everything at the dealer.

If you were planning on modding/tuning it might be more concerning to mod a motor that you aren’t 100% confident in as built or replacement S58 is $$$. There are a few companies that build motors.

If you are staying stock, an extended warranty would be all I need to feel comfortable with a fix

[M_Power Rob]

Originally Posted by DrewNewM2

Sorry to hear this OP. Seems like a rare occurrence. I would “test drive” if for a while and like others mentioned then have them do another full evaluation, compression, leakdown, oil analysis, etc. If anything is off, push for a new engine or buyback or something like extended warranty. Just stay on top of them. Document everything at the dealer.

If you were planning on modding/tuning it might be more concerning to mod a motor that you aren’t 100% confident in as built or replacement S58 is $$$. There are a few companies that build motors.

If you are staying stock, an extended warranty would be all I need to feel comfortable with a fix

I would definitely not test drive it for a while. It should be taken back in asap and if any issues, start barking to NA. Last thing you want to do is put miles on a motor that has an internal coolant leak.

[DSTR]

Originally Posted by M_Power Rob

I would definitely not test drive it for a while. It should be taken back in asap and if any issues, start barking to NA. Last thing you want to do is put miles on a motor that has an internal coolant leak.

Correct^^^^^^^^^^^^^^^^^^^^^

Ship it back to the dealer via tow. Call BMW NA and get a field service engineer/rep to assess the engine. Do not operate the car.

[DrewNewM2]

Sorry, my understanding based on OPs post is that it has been claimed to be fixed by BMW and next steps is to drive it. It’s under warranty I imagine

[Squidget]

Originally Posted by DrewNewM2

Sorry, my understanding based on OPs post is that it has been claimed to be fixed by BMW and next steps is to drive it. It’s under warranty I imagine

We are guessing that the dealer is giving the OP a line of BS, not BMW NA. You can ask BMW themselves to intervene if you think you are getting played by a dealer.

Warranty isn't a good enough reason to risk driving it. If the car is not properly fixed and you drive it, you can end up totalling it. And yes, there's a warranty, but it's still a tremendous hassle to get a whole motor, or even whole car, replaced.

[M_Power Rob]

Originally Posted by Squidget

We are guessing that the dealer is giving the OP a line of BS, not BMW NA. You can ask BMW themselves to intervene if you think you are getting played by a dealer.

Warranty isn't a good enough reason to risk driving it. If the car is not properly fixed and you drive it, you can end up totalling it. And yes, there's a warranty, but it's still a tremendous hassle to get a whole motor, or even whole car, replaced.

To add, even if dealer told them itbwas fixed, if the explanation does not make sense or factually does not satisfy what the issue is, then OP/owner needs to stand firm and push back.

I would not want to have to explain to the dealership why I lunched the motor when I knew a repair could not have resolved the initial issue/diagnosis. To much liability to be blamed for negligence on the OP/owner.

[mynameisnick4]

As a fellow Pittsburgh G87 owner, I'll be following this thread. I haven't had any complaints with my dealer (north of the city.) I am not mechanically inclined any means but if they say coolant got into the engine but then it passed a pressure test, where could it be coming from? Unless they didn't run the pressure test properly/long enough. Back when I had a Focus RS and went through the head gasket debacle, I believe the pressure test they ran asked for the test to be run and left for an extended period of time, like a day, to ensure no leaks.

[kghazen]

I am working with BMW Bobby Rahal South of Pittsburgh. Thus far they have been great to work with and have been keeping me in the loop with each step they are taking. The next step to be taken is for a BMW driver to take the car on an extended test drive (25-30 miles of high way driving with direction to accelerate quickly and maintain high load for an extended duration).

I have asked them to perform an oil analysis on the car after they perform the test drive but have made it clear I am very skeptical of accepting the car back without additional testing being performed given the circumstances. Also, the technician shared a video of the injectors once they were out of the engine and they were absolutely coated in corroded coolant so I am going to be pushing them to provide more thorough solution/explanation.

[M3PGH]

Keep us updated. I also use Bobby rahal bmw and they chalked up my issue as normal even though it is not normal and has been documented on this forum being fixed by numerous dealers and providing them with that documentation and video proof of what I was experiencing. The issue being a leaking injector causing the slow start and smoke at start

[techwhiz1]

Originally Posted by kghazen

I am working with BMW Bobby Rahal South of Pittsburgh. Thus far they have been great to work with and have been keeping me in the loop with each step they are taking. The next step to be taken is for a BMW driver to take the car on an extended test drive (25-30 miles of high way driving with direction to accelerate quickly and maintain high load for an extended duration).

I have asked them to perform an oil analysis on the car after they perform the test drive but have made it clear I am very skeptical of accepting the car back without additional testing being performed given the circumstances. Also, the technician shared a video of the injectors once they were out of the engine and they were absolutely coated in corroded coolant so I am going to be pushing them to provide more thorough solution/explanation.

Coated in burned coolant means that engine is absolutely going to need to come apart.

There is absolutely no way to get coolant in the combustion process unless the block or head is cracked or the head gasket is blown. Absolutely no eff'n way.

Since it's injector 5 and 6 at the rear of the engine, they need to do a leak down test AND a coolant system pressure test with the engine running.

A blown head gasket or cracked block/head will immediately show up as a pulsing in the pressure test.

At this point I'd be calling BMW North America because burnt coolant is already a catastrophic failure and an engine teardown is going to be required.

I would not accept this car back to drive with a time bomb of an engine.

[Squidget]

Yep. If your injectors are fouled with burned coolant, a significant amount of coolant is getting into the ignition chamber.

Replacing the injectors and pushing it back to the customer is, in my eyes, straight up scammery. This is not some exotic failure event, this is a bread-and-butter kind of failure and no competent mechanic would miss it.

The best case scenario is a cracked head gasket, the worst is total engine loss.

[Squidget]

As a sidebar Q: I have suffered cracked head gaskets on two different cars in my life, and in both cases you could see the white cloud from SPACE. 1970s pushrod V engines, both of them.

Is a cracked gasket not as obvious with modern injection and exhaust systems?

[fanofbmwe46]

What’cha driving as a loaner car?

[BgsDks]

I predict the problem will resurface promptly if it is cracked head/block/gasket and will misfire as well. Now an unethical mechanic could run gasket sealer through the coolant system and hide the problem for a while. But if you had coolant in the cylinder and none of the above replaced, and subsequent testing reveals no coolant, how do you explain that?

[spurcap]

Originally Posted by Squidget

Yep. If your injectors are fouled with burned coolant, a significant amount of coolant is getting into the ignition chamber.

Replacing the injectors and pushing it back to the customer is, in my eyes, straight up scammery. This is not some exotic failure event, this is a bread-and-butter kind of failure and no competent mechanic would miss it.

The best case scenario is a cracked head gasket, the worst is total engine loss.

Remembering this is a warrantied car, I would say a total engine loss is best case scenario. I would rather a brand new engine in a crate getting put in my car that was assembled by BMW than a HG job being done by a dealership that seemed fine with coolant in cylinders.

Depending on how quickly they can remedy, lemon law could also come into play.