1987 Crusader 270 GM 5.7l 350ci. While cruising in Lake Erie yesterday, lost power on port engine (syncronizer pegged to starboard).. She would not hold RPM above 2800, but held anywhere up to 2800. Throttling up past that she would bog down. My first though was a clogged fuel filter based on those symptoms, but also noted low oil pressure, so I nursed her back to port. Once in, I checked the oil. Dip stick was clean with proper oil level. I opened the valve cover and found milkshake sludge. Same under the other valve cover. So my next assumption is a head gasket, but I did NOT overheat.. I've always associated blown head gaskets with the added temp of engine overheating, but I guess its not improbable for the gasket to give away under normal conditions is it?
Also I find it odd that the oil in the oil pan appears to be clean oil without water in it, and only sludge under the valve covers. Does that point to something other than a head gasket? Does anyone have any suggestions? I plan to start pulling that engine apart on Tuesday to replace the gaskets (hoping thats the problem)
I only had the boat out a couple of times this year, but not for lenghty times, so I'm concerned that there could be a freeze crack from winterization that is just now starting to show. So I guess I'm asking for suggestions of things to look for.
Thanks guys!
Also I find it odd that the oil in the oil pan appears to be clean oil without water in it, and only sludge under the valve covers. Does that point to something other than a head gasket? Does anyone have any suggestions? I plan to start pulling that engine apart on Tuesday to replace the gaskets (hoping thats the problem)
I only had the boat out a couple of times this year, but not for lenghty times, so I'm concerned that there could be a freeze crack from winterization that is just now starting to show. So I guess I'm asking for suggestions of things to look for.
Thanks guys!