1992 500SL makes this noise
Does this ONLY apply for when the car is cold? I seem to get the clacka clacka noise after I shut the car off, wait 15 minutes, then start the car again. I've reached through the driver's door, started the car, then stood at the front of the engine. The noise seems to come directly from each cam tower, right at the distributors on both sides. It goes on for a few seconds then goes away. The engine is running like a champ otherwise.
Could this relief valve be my problem or the check valve?