Thank ya'll,

Well, the bolt broke. I can't tell how far down from the top of the bolt it broke without taking off the valve cover. What's so odd is how easy it broke. When that one broke I thought - o no, I better tighten up the other rear bolt to make sure no oil leaks out, but that one broke just as easy. The 1984 190d has an aluminum head. If it broke even with the head what would be involved to repair it? Appreciate your help.

Hugh Sr