1984 Sea Ray Seville with the 3.0L/140hp Mercruiser. Had it out on Memorial Day and impeller let go...only thing I can figure is I sucked something up in shallower water because impeller was less than two months old. Anyway, engine started to overheat but I didn't notice until power loss occurred (possible vapor lock); I shut it off immediately. I let it cool for a bit then turned it over, it started again with some difficulty but actually sounded okay at idle and under light power until I shut it off for good after less than a minute. Took it to my mechanic who thought I might have dodged a bullet but wanted to do compression test anyway. Results came back 95-100psi on 1, 3, and 4, and 70 on 2. Granted 95-100 isn't particularly healthy but battery was probably low after turning over that starter for so long on the water to get her fired up again, and engine was cold, so those #'s *might* be higher in reality.
So my question is - does this engine have any life left, or am I at the beginning of the end here? My mechanic, who I trust and have been using for years, seems to think these #'s are normalish for an engine of this type and age, especially given the testing conditions. He thinks the low cylinder has been that way all along and we just didn't know it, but I'm not convinced. I am hesitant to even fix the impeller until I am sure I shouldn't just retire her. No use throwing good $$ after bad if the engine is toast; this boat is not worth the money a major overhaul would cost. That said, I have always maintained this boat well for the few years I've owned it and have literally never had an engine problem until now.
Thanks for your help!!
So my question is - does this engine have any life left, or am I at the beginning of the end here? My mechanic, who I trust and have been using for years, seems to think these #'s are normalish for an engine of this type and age, especially given the testing conditions. He thinks the low cylinder has been that way all along and we just didn't know it, but I'm not convinced. I am hesitant to even fix the impeller until I am sure I shouldn't just retire her. No use throwing good $$ after bad if the engine is toast; this boat is not worth the money a major overhaul would cost. That said, I have always maintained this boat well for the few years I've owned it and have literally never had an engine problem until now.
Thanks for your help!!
