- Apr 5, 2017
There is a guy called Rex who mainly works on Mercedes cars on youtube. He has a video of a 1997 80 series 4.5 with what sounds like a diesel engine, but in fact it is a very serious engine knock. Watching this video was very interesting as the way they went about trying to figure out what the knock sound was. Now there are 3 videos in this series and it shows how they try to figure out what it is, but the the 4th video is missing where they are looking at the 3rd and 4th cylinders as this is where the sound is coming from, has anybody seen these videos and more to the point, seen how they fixed it. I am just curious as to what it was.