1990 Ski Nautique - Overheating / 'Flushing'
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Boat Maintenance
Forum Discription: Discuss maintenance of your Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=41109
Printed Date: November-16-2024 at 5:33am
Topic: 1990 Ski Nautique - Overheating / 'Flushing'
Posted By: PSmolchek
Subject: 1990 Ski Nautique - Overheating / 'Flushing'
Date Posted: May-22-2017 at 9:44pm
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Hey all - first post. Thanks for the site, wealth of knowledge already. Did a few reads, but couldn't find something that I was looking for...may not exist, but felt I should ask. A friend keeps her 1990 Nautique at my house - it wasn't used from November through last weekend, battery was dead so we had to recharge in the boat lift. Did a 'dry start' to kick it over and probably (definitely) left it run a little too long forgetting it needed to draw raw water to cool. Melted the impeller. Once we got the engine running without the jump, we tried to get it out on to the lake but immediately started overheating. TOTALLY melted the impeller.....nothing resembling the rubber flaps even remotely still present. I pulled them impeller assembly without issue, and disassembled (marine shop is locating the correct rebuild for me) but I was then warned about making sure I pulled everything else apart and flushing the engine to ensure that none of the pieces are still clogging the water cooling lines, etc. Question - what needs to be checked? I am mechanically inclined but I don't necessarily know the names of what I am looking at....so I can easily trace hoses, remove and reinstall, etc. Wasn't sure if there was a way to back flush with water to push any debris out the way it came in - or is it only a few of the hose assemblies in the front of the motor. Is there a MAIN concern point that I should be....well, concerned with? Thanks in advance. |
Replies:
Posted By: PSmolchek
Date Posted: May-22-2017 at 9:49pm
 Nice, huh?? LOL |
Posted By: Gary S
Date Posted: May-22-2017 at 10:59pm
Welcome Paul. You don't have too big a job to do. Go and get yourself a thermostat gasket for say a 1990 5.0 Mustang and pull the thermostat cover with the arrow below. The "extra" parts can accumulate there or in the hoses going from that cover to the exhausts so you can remove the hoses from the exhaust manifolds and check inside them and in the brass 90's on the manifolds. If you don't find anything don't worry. Put it back together and fire it up. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1711&sort=&pagenum=1&yrstart=1966&yrend=1970" rel="nofollow - 69 Mustang HM SS 95 Nautique Super Sport |
Posted By: MACS81SN
Date Posted: May-22-2017 at 11:05pm
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Haven't seen one like that in a long time. 😂 Check inside t-stat housing and both ports. Check hoses to exhaust manifold. Check plastic elbows on exhaust manifolds. Remove and check or poke wire thru to make sure clear. The t-stat housing and plastic elbows is where I have found most of pieces. Might want to check hose from bottom of pump to transmission cooler. Seen pieces here but not often. ------------- Mark 1999 -SN - 502 Python 1981 - SN Owned 33 years - Sold 1968 - Mustang - Sold |
Posted By: Gary S
Date Posted: May-22-2017 at 11:07pm
When you remount that raw water pump it can go on either way If the engine runs in the normal automotive direction,left, the screw you see on this pump goes toward the block. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1711&sort=&pagenum=1&yrstart=1966&yrend=1970" rel="nofollow - 69 Mustang HM SS 95 Nautique Super Sport |
Posted By: MrMcD
Date Posted: May-22-2017 at 11:36pm
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All those chunks missing from your old impeller are in your engine plugging things up. Follow the great advice already posted and you will be back in business. If you don't clear them out odds are about 85% you will overheat after you install the new thermostat. Fix it now and don't ruin a great ski trip with a breakdown. ------------- |
Posted By: PSmolchek
Date Posted: May-23-2017 at 10:18am
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Gary - thanks man. LOL. After I got it off I had that thought run through my head that went something along the lines of "this isn't universal....it has to be position oriented...." So to understand you - if I were on the starboard side of the boat, the pump is located inline on the front right side (starboard) side of the engine. The pump as pictured above in your reply would need to be FLIPPED - pulley still to the front, but the side screw that I see would actually need to facing IN towards the block - correct??? I believe that to be the orientation it was when I took it off. And THANK you to everyone else - |
Posted By: bb12
Date Posted: May-23-2017 at 3:21pm
Yes, the cam screw faces towards the block on standard rotation engines. ------------- 1989 Ski Nautique 2001 |
PSmolchek wrote:Posted By: Hollywood
Date Posted: May-24-2017 at 1:38am
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Wrong. A screw faces the way it goes inro a hole. A person faces the way they walk forward. A boat faces the bow. A screw faces the pointy end. |
Posted By: KENO
Date Posted: May-24-2017 at 8:58am
You sound like you're having a Pete moment here Hollywood, maybe you should have posted something more like this 
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Posted By: PSmolchek
Date Posted: May-24-2017 at 9:31am
And a man has no name...... |
Posted By: SNobsessed
Date Posted: May-24-2017 at 10:03am
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The water goes the long way around the circle, simple as that. ------------- “Beer is proof that God loves us and wants us to be happy.” Ben Franklin |