2006 Om647 Engine knock


Hello forum, my 2006 sprinter was driving one night and developed a loss of power. It didn't over heat or anything. Just lost power and started to knock. Engine has oil to the correct mark, and the coolant level is where it should be. No oil is in the coolant. I performed a leak off test a week prior to this knock and the injectors seemed to be okay. The knock sounded like something underneath the valve cover, so I removed it and it looked pretty well. Nothing seemed out of place and it was really clean. Any idea what the knock could be? I've placed a link to the YouTube video of the sound. When thr engine is running, there is not a lot of blow by coming from the engine cap. (Approximately 180k on motor)
Thanks guys

Top Bottom