How do you adjust the valves on a 1986 2.3L Mercedes 190E?

These engines have two different set-ups depending on where they were sold, assuming you have a basic knowledge of what your looking at, if you have a look in the oil filler you should be able to determine which set-up is fitted. one set-up is an old school screw and lock-nut type accompanied by a single row timing chain. The other is a shim under bucket design which is accompanied by a twin row chain. The first type is a straight forward rock on one set on four job. The second is a pain in the bollix, you rock on one, measure on fou,r rock on, then measure the companion cylinder working through all your 4 cylinders then bring the motor to TDC. remove the timing chain tensioner lop off the chain lift out your cam, remove the lifters and finally shim your valves as per previous measurements. have fun.