Normal Engine Temperature
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Engine Repair
Forum Discription: Engine problems and solutions
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=4261
Printed Date: May-18-2024 at 11:00pm
Topic: Normal Engine Temperature
Posted By: BobbyG
Subject: Normal Engine Temperature
Date Posted: July-24-2006 at 10:45am
I have a 98 Sport Nautique with a GT40. I have noticed that my engine temp is about 210 even after being in the water for 15 minutes. Is that normal and what temp should it be?
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Bobby G.
98 Sport Nautique
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Replies:
Posted By: David F
Date Posted: July-24-2006 at 11:20am
210 is too high. Should be around 180 or lower. First and foremost, check the condition of the raw water pump impellar. Next check the thermostat. If the impellar has lost blades, you need to find them. Look at the thermostat first. Next, remove the exhaust riser and look in it.
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Posted By: Tim D
Date Posted: July-24-2006 at 6:05pm
You will not find any impellar pieces in or on the thermostat. If there were any pieces stuck in the thermostat it would run cooler.
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Tim D
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Posted By: LakeBoy
Date Posted: July-24-2006 at 10:36pm
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also check your water inlet (bottom of boat) for a clog, and your water filter/strainer for gunk.
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Posted By: BobbyG
Date Posted: July-25-2006 at 11:33pm
can anyone tell me the best way to determine the reason for the overheating? whether its the thermostap or the impellar pump not working.... How difficult is it to replace either of those items myself and should I go ahead and replace both while at it? i called a couple of certified marinas and their booked till the end of september.
also, earlier in the year, i installed a flush pro kit on the water hose between the water inlet hole and the raw water filter. before installing the kit, the hose was angled up slightly into the water filter. i never cut the hose a few inches shorter and now the hose curves close to a 90 degree angle.........but there is no kinks or pinches in the hose. could this be causing the water pressure from the lake not to reach the impeller pump. does the impeller pump actually suck in the water or only operates to pump water into the block only.
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Bobby G.
98 Sport Nautique
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Posted By: The Dude
Date Posted: July-25-2006 at 11:46pm
You may want to put your flush pro kit after the raw water filter instead of before it. A 90 degree angle isn't bad if it's over enough space. If it's tight you may have a problem.
Start with your impeller like mentioned above. Remove your water pump and inspect the impeller. If there are pieces missing, go looking like mentioned above. This stuff isn't hard, but you don't want to run an engine at 210. That's too high.
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Mullet Free since 93
http://www.correctcraftfan.com/diaries/details.asp?ID=717&sort=&pagenum=1&yrstart=1991&yrend=1995 - 95 Sport
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Posted By: Tim D
Date Posted: July-26-2006 at 9:17am
Go ahead a change the thermostat, it's not that hard. It's probably very rusty and get some blue gasket maker silicone, it helps to seal and hold pieces in place while you're reinstalling. And the impeller doesn't have to have pieces broken off to be worn out. Inspect the tips of the impeller. If you see slight flat spots on the tip of the blades it is worn.
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Tim D
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