89 ski nautique questions
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=10781
Printed Date: September-29-2024 at 5:28am
Topic: 89 ski nautique questions
Posted By: rjjmorgan
Subject: 89 ski nautique questions
Date Posted: June-09-2008 at 2:13pm
I have 2 questions:
My throttle control backs down when i take my hand off it. Is there an adjustment or do i buy a new one. If new one where do I get one??
Also my boat runs 180 cruising slow and around 200 going fast. Raw water pump rubber looks great. How hot should it run?
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Replies:
Posted By: 79nautique
Date Posted: June-09-2008 at 2:20pm
well the return spring on the carb might be a little strong causing the throttle issue.
for the running hot I would say you have an automotive t-stat (180) when you need a 142 marine t-stat that will keep it around 160.
------------- http://www.correctcraftfan.com/diaries/details.asp?ID=756&sort=&pagenum=1&yrstart=1979&yrend=1979 - 79 nautique
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Posted By: TRBenj
Date Posted: June-09-2008 at 2:52pm
79nautique wrote:
well the return spring on the carb might be a little strong causing the throttle issue.
for the running hot I would say you have an automotive t-stat (180) when you need a 142 marine t-stat that will keep it around 160. |
Agreed. Not sure if a proper stat will help the the fact that it heats up when running hard, though. If it heats up AFTER running hard, thats normal- but it should stay coolest when youre running the most water through the engine. Id take a closer look to see if there are any blockages in the coolant paths (from a fragged impeller). If not, it could be the seal on the pump going.
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Posted By: behindpropeller
Date Posted: June-09-2008 at 4:57pm
Turn all of your switches off and tell me what the gauge says. Due to poor grounding you will find that the temp meter will jump 5 deg. for each switch you have on.
As for the thermostat, a 160 tstat will keep it at 160, and 142 will keep it at 142. So use the correct 160 tstat.
Tim
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Posted By: 79nautique
Date Posted: June-09-2008 at 5:02pm
behindpropeller wrote:
As for the thermostat, a 160 tstat will keep it at 160, and 142 will keep it at 142. So use the correct 160 tstat.
Tim |
that's not true, it opens at that temp but will not keep it at that temp, usually about 10-15 hotter than the rated opening temp.
------------- http://www.correctcraftfan.com/diaries/details.asp?ID=756&sort=&pagenum=1&yrstart=1979&yrend=1979 - 79 nautique
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Posted By: behindpropeller
Date Posted: June-09-2008 at 5:03pm
So why does the manual call out for a 160 then??
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Posted By: TRBenj
Date Posted: June-09-2008 at 5:37pm
behindpropeller wrote:
So why does the manual call out for a 160 then?? |
I havent read that page in the manual, but Correct Craft's recommendation is for the 143 in carb'd boats, 160 in EFI. I run the 143 and the boat stays at 160. Joel confirmed that a 160 stat in the same boat kept the temp at 180.
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Posted By: 79nautique
Date Posted: June-09-2008 at 5:41pm
behindpropeller wrote:
So why does the manual call out for a 160 then?? |
it's not in the PCM manuals
------------- http://www.correctcraftfan.com/diaries/details.asp?ID=756&sort=&pagenum=1&yrstart=1979&yrend=1979 - 79 nautique
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Posted By: SNobsessed
Date Posted: June-10-2008 at 1:16am
RJ - My boat was running 'hot' at higher speeds. Turned out to be a loose wire connection at the sender. FYI
------------- “Beer is proof that God loves us and wants us to be happy.”
Ben Franklin
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