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  #1  
Old 07-17-2015, 07:26 PM
sixtre sixtre is offline
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Boat: 2005 MasterCraft X-Star, LQ9
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2005 MasterCraft X-Star, LQ9 OVERHEATING / Losing coolant

Hello,

I have a 2005 MasterCraft X-Star, LQ9 and it is constantly overheating and losing coolant.
I can't figure out where the coolant is going. I put 1 gallon - a whole jug - in last night after it was overheating. Can't seem to see a leak anywhere. Suggestions? Someone said it may be leaking into the heads and getting into the motor - what would be the signs of this?
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  #2  
Old 07-17-2015, 07:39 PM
Cain0725 Cain0725 is offline
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change your impeller and or thermostat first. I had this same problem in mine, fixed it ..
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  #3  
Old 07-18-2015, 02:57 AM
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jamespjackson95 jamespjackson95 is offline
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Boat: 2004 X-Star, 1997 X-Star, 1994 Maristar 225VRS
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Check your oil and make sure it's not mixing
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Old 07-19-2015, 04:29 PM
sixtre sixtre is offline
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Quote:
Originally Posted by jamespjackson95 View Post
Check your oil and make sure it's not mixing
Thanks - what would be the signs of this? I have checked the oil - it seems fine - would it froth, or?
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  #5  
Old 07-19-2015, 04:30 PM
sixtre sixtre is offline
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Quote:
Originally Posted by Cain0725 View Post
change your impeller and or thermostat first. I had this same problem in mine, fixed it ..
Thanks - will check this.
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  #6  
Old 07-19-2015, 04:48 PM
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jamespjackson95 jamespjackson95 is offline
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I would pressure test the cooling system, and listen for leaks... I'm know it's pretty common for the coolant/raw water coolers to leak. Some people forget to drain those and they crack.
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  #7  
Old 07-19-2015, 08:51 PM
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CC2MC CC2MC is offline
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I am having the same issues with mine as well. I checked my oil and there was no water in it. I also bought a new thermostat but haven't installed it yet. Let me know what you find out. I will let you know If I find out anything as well.
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