Hello - I am new to the forum, but I (hopefully) have a common problem with my 1991 Volvo 240, which has 165k miles on it (almost new). First I developed a valve cover leak, which was repaired. Now it looks like I have blown the main engine seal. It seems there is a problem with a buildup of pressure. The flame trap was cleaned in the fall ... any ideas what the cause could be? Thanks ....