For the second time in less than a year we have sufferd a blown engine (holed piston) on our 1.7 mercruiser inboard diesel. We have heard that this is not an uncommon problem. I would be gratefull if anyone who has sufferd similar problems or knows anything about this would contact me, either through this forum or by E.mail.
Sorry to worry anybody, Our boat/engine was 3 years old in Feb the engine hours at the first failiure were just over 200 hours and have only done another ten hours since then. Revs at the time were 3100 rpm in both cases, the boat was loaded wit six divers & kit plus one cox and was not on the plane.
Dont know if same piston or not as we have not had chance to strip engine yet.
Have seen thread of similar problems on www.ybw.com/forums.02 03 05
If you want to find someone to have a rant with, contact Bob Layton Marlin Dive Charters who after killing his 3rd inboard after only 4 hours has gone for outboards....
Just so people know, Mercruiser revised this engine in 2005. If your serial number starts with 88 it's the reivsed version and this problem has been resolved
Just so people know, Mercruiser revised this engine in 2005. If your serial number starts with 88 it's the reivsed version and this problem has been resolved
I'm no expert, what i've read is that a bad spray pattern on Cylinder 3 caused a holed piston. The revised model (88 serial number) had this problem fixed (My engine, thank god!) I could be wrong, it's only what i've read
