[JasF30]

Ive heard some talk about bad injectors scoring cylinders is there an upgrade for these oem injectors at the moment

[Aldor27]

Originally Posted by JasF30

Ive heard some talk about bad injectors scoring cylinders is there an upgrade for these oem injectors at the moment

Following, getting paranoid about the injectors now.

[///Madgreek1]

I read a technical bulletin from BMW about the upgraded fuel system on the b58tu engines (m340, supra, etc) I believe they updated the design of the injectors, hopefully eliminating some of the failure points. I'm sure it's a long shot, but I wonder if they could be made to work on the b58b30a from the f30 cars (similarly to retrofitting the tu hpfp)

[Sgm123]

Is this mainly happening in US or Europe as well.

[F32Fleet]

Being unable to operate outside stock parameters doesn't make an injector unreliable.

[marcthedark]

Originally Posted by F32Fleet

Being unable to operate outside stock parameters doesn't make an injector unreliable.

And regardless of the above assumption there are stock engines with injector failure

[F32Fleet]

Originally Posted by marcthedark

And regardless of the above assumption there are stock engines with injector failure

If it really becomes widespread BMW will issue a revised injector (ex, N54) and/or offer extended warranty on them. Just remember forums by their nature magnify perceived problems.

[440MIA]

Not sure if this has anything to do with it, but have a look at the pictures of the B58tu changes I attached.
I'm not sure if the new honing process has any significance impact.

[///Madgreek1]

Originally Posted by 440MIA

Not sure if this has anything to do with it, but have a look at the pictures of the B58tu changes I attached.
I'm not sure if the new honing process has any significance impact.

Would these changes not lead someone to believe that BMW knew that their cylinder honing and injectors on the b58b30a were problematic in enough cases to make a difference?

[B50AteYourRide]

Anyone have any thoughts on something like Lucas upper cylinder lubricant and injector cleaner? What's really the cause of the injector getting stuck open?
Not questioning anyone, but you would think that would be noticeable before damage occurs.

Sounds like damage is limited to the bottom end at least. Can't one get just a short block from BMW?

[///Madgreek1]

Originally Posted by B50AteYourRide

Anyone have any thoughts on something like Lucas upper cylinder lubricant and injector cleaner? What's really the cause of the injector getting stuck open?
Not questioning anyone, but you would think that would be noticeable before damage occurs.

Sounds like damage is limited to the bottom end at least. Can't one get just a short block from BMW?

The block from BMW is $20k 🤣🤣🤣

Trust me, that was the first thing I looked at. You can get it for like $17k and change through a discounted dealer online, but still...

[B50AteYourRide]

Originally Posted by ///Madgreek1

The block from BMW is $20k 🤣🤣🤣

Trust me, that was the first thing I looked at. You can get it for like $17k and change through a discounted dealer online, but still...

Yea, BMW Northwest. I was wondering about that. The picture shows the head as well, and 5 ports...

https://parts.bmwnorthwest.com/p/BMW...iABEgK9cvD_BwE
I guess it does say short engine.

I hope that comes down soon. Have you looked at the cost of sleeving?
Can’t be more than that. You could do some pistons as well. At least you’ll have something stronger.

[kern417]

An injector stuck open is not the same as it being dirty. The internals are damaged and not functioning. You would have to improve the internal design to be more robust. I'd say the TU injectors would be more susceptible to failure since they operate at higher pressures.

The only way to monitor it is to log cylinder timing and AFRs. The car won't necessarily run rough at first.