W126

This beautiful 1982 300 SD has been making a knocking/banging sound that I think is coming from under the valve cover. The noise is not audible at low RPM or before the engine warms up completely. At higer RPM 1700+ the noise becomes increasingly loud and is directly rythmic with the speed of the engine. After probing the noise with a stick I think it may be from what I think is the oil pump (under the oil filter, or the transmission. The trans was probed at the bell housing also close to the oil pump (I think.) Is there anything that could make a loud noise such as this in these areas?

82 300 SD I'm getting a vibration (rear)? shortly after I have reached 35 MPH. I had this problem before I put new tires on it also. Is it possibly from one or both of the short shafts? Vibration does not go away when you put it into nuetral. HELP this is really annoying :)

I have 1989 300se that was running quite fine until recently. I had just gotten off the freeway and came to a stoplight. when I turned the corner and accelerated the car suddenly ceased to speed up and sputtered like it was runnin out of gas. Well with over half a tank of gas I knew it was not the problem. The car died at the next lite and would not restart. Tow truck driver suggested fuel pump. Well I replaced pump, filter , and the thign next to that(accumulator?) Now, car cranks but it seems like I am not getting spark at the plug nor fuel at the injector .