caught diesel injector failure on Inpa

[simt]

Hi all,
I wanted to share this to add to the community knowledge base.

I had a diesel injector die on our bmw X5 3.0sd (35d) with the M57TU2 engine.
I was lucky enough to have actually caught the signs of it failing in Inpa hours before the injector failed.


https://youtu.be/FicbKEFSSgI

Have a look at Cylinder 5.

We were heading out to family in the country on a 6hr drive. My wife was taking a turn driving, I had the laptop in the car, so on a whim checked out the live data with Inpa and saw what cylinder 5 was struggling. I think 'Selective Mass Adjustment' is similar to fuel compensation or some such. 3 hrs later and only half an hour from getting into Mildura the car died. I've had two injectors die on me before and I knew this was exactly the same thing. -The car's driving along just fine, and at first you don't even notice that the engine has died. It's only when you wonder why you're slowing down and try the accelerator and nothing happens, that you peg the engine has died.
I also know that usually with the first engine stall, you can restart the car and keep driving for a while. Which is what we did. I'm happy to say we got to our final destination a half hour later with no further difficulties.
(With a dead injector it's the next day where you can't go any further. The car will start fine, but as soon as it's up to temperature, the slightest acceleration kills the engine.)

When we got in that night, I got this code: "0042FB DDE: Injectors, cyl 4, 5, 6, activation" which odometer wise related to the moment we stalled. The next day I pulled the intake manifold and checked the ohm resistance on every injector. They were all fine (180k Omhs +/- 5k) except for cylinder 5 which was like 25k Ohms.

I'm really glad I caught that behaviour in Inpa, I'm going to try and see if it's something I can access through a PID on Torque Pro with my phone and an ELM327 adaptor.

-Simeon