|
I don't know about the m103, but on the m102 (2.3L 4 cyl) often the "diesel" sound is caused by a worn timing chain that has stretched.
You might try replacing this while you've got the valve cover off.
__________________
Daily Driver: 02 E430 4MATIC
In the family: '03 E500 // '04 ML500 // 64 220SE
|