Yes, that is the sucker I was thinking of. I haven't touched that yet.


Today's test drive showed a new aspect to the issue, smooth driving for three km, then the ratty engine behavior begins. Once again the 4WD warning light and this time the yellow brake light come on , so I pull over and into neutral but the engine is still misfiring.


In some small way this is a terrible relief as it takes the issue from the trans and puts it back on the engine as far as I feel.



Now I do have a scan tool, for what it is worth. iCarsoft i820 supposedly for BMW. Yesterday it gave me a code that the No 1 injector was not working, however the engine was smooth in idle and revs. Today I looked up the software for it and updated it, then run the test again, no faults, but it does indicate that the air flow should be between 2 - 4 mgs on the intake. Mine is 44 to 58 mgs dependent on RPM. As far as I can see our there are no leaks which is what they say can cause this, but what about the Turbo Charger?


Maybe I will get this breather and have it replaced, it will be another "tick on the box", I used Penrite oil in my last oil change, to factory specs. I just had to put in 900ml, so there is some use. This I have been told by several BMW owners is not unusual since I chose that brand oil. They have had the same and use different brands now with better results. So, Penrite is off my oil list.


The last time I had this behavior, it was the primary fuel filter and that was 18 months ago. I am starting to think it just might be the same thing happening again, although the car has never been below half a tank since I have had it. Maybe, it is just gotta be done!


Thank you both Gentlemen, your input is really appreciated very much. Kindest regards, Jeff

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I own a BMW E53...Always questions, unfortunately I can rarely supply solutions. I will try to give results to my problems if they are fixed and how it was done.