We have a 99 Bayliner 1750 with a 3.0 mercruiser. Looking for some visual help. Last sunday we were about 5 minutes into a boat ride and lost power, rpm and gained a really rough runnning engine. Did not overheat. Got it back to the dock loaded it up and came home. i diagnosed a blown headgasket. I opened it up and I was correct. Usually, head gaskets blow for a reason. i can't figure out why it went, maybe it just decided it give way. The visual question is in the pic. Look at the cyl head. The part between 2 and 3 blew; but what is up with taht white exhaust valve on the end? Also, the tow cylinders that the gasket blew between are a lot cleaner than the end two cylinders. They look like they took water and were washed; but when i pulled the plugs, they were all similiar and none were washed looking. Any advice, related to the visual question or not is welcome. i am going to take the head to the machine shop and have them tcheck it out, but otherwise, put it back together. thanks mike
