Mercedes ML320 CDI poor cold start. Fault finding and repair.

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Hi

This W164 with the OM642 engine, came to me with several issues!...
On this video, I will be tackling the poor cold start...
The owner replaced all the 6 glow plugs, and despite the improvement, still hard to start when cold...
On the engine ECU, the error code 2270-4...
Follow me on this video to find out what was the problem and how to resolve it.

Hope you enjoy the video.
Any questions or comments put them below.
Like always, thank you for watching!

Видео Mercedes ML320 CDI poor cold start. Fault finding and repair. канала LM Auto Repairs