[pak84]

Hi all,
I have X3 E83 with 3.0D 218hp engine, code M57TU2/M57N2
My sympthoms are white smoke on cold start, just if the car is not started more than 6-7 hours and the temprature is bellow 0C. It starts well, but the first 2-3 seconds the RMPs are not stable. Not other issues.
I have tested the injectors back leak, all are with similar values <8 for a minute , the corrections of all the injectors ON HOT engine are in the limits -0.8:+0.8, but the on cold engine, in the first seconds when it is started I see two injectors with more than 4,5-5 correction.
I'm searching for opinions on my problem, is the measurment on absolutelly cold engine point to the problematic injectors?
Thanks in advance

[lnxguy]

Why do you think this is an injector problem and not a glow plug/module problem? Especially when you're dealing with temps around 0?

[Scubudo]

I agree with Inxguy.
When my glow plug module went out, that is what I experienced when starting in colder temperatures.
I couldn't tell a difference when the weather was warm.

[pak84]

First, thanks for the answers. I had thought about this point with the glow plug system- the relay and the glow plugs are changed one year ago, Beru both. Currently I have 1 glow plug not working following the diagnostic. In additional I have a garage that is always 8-9C and is the same.

[lnxguy]

Originally Posted by pak84

First, thanks for the answers. I had thought about this point with the glow plug system- the relay and the glow plugs are changed one year ago, Beru both. Currently I have 1 glow plug not working following the diagnostic. In additional I have a garage that is always 8-9C and is the same.

So you've got a dead glow plug and you're wondering why you're getting white smoke on startup? You've found your problem. Replace the glowplug.

[Scubudo]

The glow plug could still be the problem.
I live about halfway between Houston and Galveston where 8-9 c would be considered colder temps.
Yes, we are wimps, but being near sea level in an area that is flat and windy almost all of the time, and where there is often close to 100% humidity, makes it feel cold enough that people from the north are taken by surprised to find that they have to dress warmer than when at home.