300SDL

I have begun to notice a rattle coming from the engine when idling. Does not seem to be present at any other point when driving. Timing belt was changed at 160K, and it is now at 291K so that is again due. Could a loosened chain be the problem??

Also for 300SDL owners. I had a long period of ABS problems. Mercedes tried to find it, so did several other shops. Said the sensors where failing. I just had the upper control arm changed, guess what the ABS is working fine now. It has most likely been bad since I bought the car, but if you've had the same problem that could be the cause.