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  #11  
Old 06-15-2013, 03:37 PM
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Traxx822 Traxx822 is offline
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Hey i'm not boat mechanic. Or a mechanic at all. But white smoke, overheating. In my experience thats a bad thing. But JimN is probably on to something. Run through his list and make sure to single everything out before you go selling it.
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  #12  
Old 06-15-2013, 04:07 PM
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what year maristar - have you ever pulled the risers to inspect water channels? How about the thermostat - have you ever replaced that?
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  #13  
Old 06-15-2013, 05:20 PM
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Originally Posted by markiehd View Post
dont say the dreaded head gasket word.... i might sell the boat then....I am going out in an hour or so, I will report back tonight. thanks again everyone
Better to have a bad head gasket than a crack, somewhere.
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  #14  
Old 06-15-2013, 09:06 PM
markiehd markiehd is offline
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well, back from afternoon on the lake. wicked cruising at 1000 rpms. 2000 rpms and the boat starts going up. at 180 i went back to cruising mode.... checked the oil, no signs of water in the oil, so im thinking not a head gasket. tomorrow, I will open the impeller again, check it out, replace for good measure, check all lines for debris, and replace the thermostat with a marine grade thermostat...... and pull apart the dash to see whats going on with the gauges... ughh
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  #15  
Old 06-16-2013, 01:18 AM
markiehd markiehd is offline
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well, idled fine, but temp started creeping up under load. Now i am caustios, and when it hit 180 i just idled after that, keeping the temp at 160. I have an automobile tstat from autozone in it.. are the marine ones different. im thinking new tstat and impeller, not sure what else it could be. my boat always ran around 140 before problems started...
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  #16  
Old 06-16-2013, 01:44 AM
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could be bad t-stat - pull t-stat and run with out it... also marine t-stat has bypass I believe..
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  #17  
Old 06-16-2013, 07:43 AM
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Originally Posted by markiehd View Post
well, idled fine, but temp started creeping up under load. Now i am caustios, and when it hit 180 i just idled after that, keeping the temp at 160. I have an automobile tstat from autozone in it.. are the marine ones different. im thinking new tstat and impeller, not sure what else it could be. my boat always ran around 140 before problems started...
Check the cover on the thermostat and the thermostat itself, especially if you ever noticed that the impeller lost one or more of its vanes.

How old is the impeller? When you change it, change the gasket, too.
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  #18  
Old 06-17-2013, 10:15 PM
towelshoot towelshoot is offline
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The marine tstats are different than automotive.
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  #19  
Old 06-21-2013, 07:27 PM
markiehd markiehd is offline
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I believe success. I took apart the whole cooling system today, and found the blockage in the lower hose, from the trans cooler to the input on the impeller. Evidently, when the old one blew debris lodges down there. I thought i had cleaned it out, but i guess it was floating around and finally got clogged in there. taking on the lake tomorrow, cant wait to ride. Thank you everyone on this board for all the help!
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  #20  
Old 06-21-2013, 07:30 PM
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mikeg205 mikeg205 is offline
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Hopefully congrats... I back flush my impeller intake hose a many times a year takes 15 minutes start to finish - good excuse to go out to man cave with a beer .....
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