Listen and learn from a live video with sound.
The old OM 616 and 617 diesel engines do make noise when they run. Not all noises are normal. Listen to this W123 240D to hear what a good engine should sound like at idle and when reving up. Watch Kent's free YouTube video by clicking on the play arrow on the image to the right.
Problem & Solution
Common among these chassis:
W110 W111 W112 Sedan
W115
W116
W123
W126