.....and I've noticed from reading the hundred or so posts on this issue that this problem is not usually caused by a loose or stretched timing chain jumping a tooth on the cam sprocket, but rather by an upper chain rail guide breaking (by being slapped by the chain) and the plastic bits and pieces getting lodged in the chain and then getting jammed as that part of the chain hits the cam sprocket.
The chain rail guides are made of plastic and get hard and brittle over time and are easily broken.
2001 E430, Bourdeaux Red, Oyster interior.
1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".
Last edited by suginami; 10-05-2003 at 02:57 PM.