’94 Ski Nautique Overheated

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   Today I lake tested a '94 SN I am interested in buying. Boat was at about 3/4 throttle and the engine started popping. Temp was at about 230 degrees. After shutting down engine we noticed the water intake line was left disconnected after winterizing and not hooked back up. Needless to say the impeller was melted, as it didn't pump water after the line was hooked back up and continued to overheat. Should I walk away from this boat due to potential damage to engine or do the pcm pro boss engines have an automatic shutdown for this reason?

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ncc74 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: April-15-2006 Location: United States Status: Offline Points: 2	Post Options Post Reply Quote ncc74 Report Post Thanks(0) Quote Reply Topic: ’94 Ski Nautique Overheated Posted: April-15-2006 at 8:20pm
	Today I lake tested a '94 SN I am interested in buying. Boat was at about 3/4 throttle and the engine started popping. Temp was at about 230 degrees. After shutting down engine we noticed the water intake line was left disconnected after winterizing and not hooked back up. Needless to say the impeller was melted, as it didn't pump water after the line was hooked back up and continued to overheat. Should I walk away from this boat due to potential damage to engine or do the pcm pro boss engines have an automatic shutdown for this reason?

ccskier16 Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: January-29-2004 Location: Hartland, WI Status: Offline Points: 103	Post Options Post Reply Quote ccskier16 Report Post Thanks(0) Quote Reply Posted: April-15-2006 at 10:36pm
	The audible alarm and temp light should have gone on way before 230 degrees. If they didn't, that's something else to check out on it. I'd walk unless you can get a really good deal on it. If you stick with it, make sure the "fried" parts are replaced, a PCM certified tech checks, and you give it a good lake test for a few hours. Then maybe pay someone else to check it out. There are other boats out there, you may just have to keep looking.

David F Members Profile Send Private Message Find Members Posts Add to Buddy List Platinum Member Joined: June-11-2004 Location: United States Status: Offline Points: 1770	Post Options Post Reply Quote David F Report Post Thanks(0) Quote Reply Posted: April-16-2006 at 9:56am
	The engine "popping" was probably the limp mode coming into play. After the impellar is replaced, remove the exhaust hoses and see if the inside was overheated sufficiently to cause them to collapse internally. Do a compression check to make sure head gasket did not blow or other internal damage. Run the engine/boat on the lake for awhile and then look for water in the oil or other signs of a cracked block or head(s).

’94 Ski Nautique Overheated

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