1990 Ski Nautique Overheating |
Post Reply | Page 12> |
Author | |
Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
Post Options
Thanks(0)
Posted: May-15-2017 at 10:50pm |
I am new to Nautique. I previously owned a Mastercraft with similar engine,, but I was lucky and never had any issues with it from date I'd purchase to resale.
I placed boat in water and left on trailer to check it out. The engine began overheating immediately. Turned off took to hose and connected to intake hose to cool motor. Nothing happened. Shut down motor and drive it home to let cool. I ordered a new raw water pump impeller and installed per instructions. Connect water hose to outlet hose of strainer because I could not get intake hose off again. The boat ran great and maintained 153 degrees. I reconnect system and took to lake. Put in water and noticed it. Engine to go passed 153 degrees. I shut it down and inspected and found the strainer empty so is was not pulling water. I'm lost at this point. Please help |
|
Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
Post Options
Thanks(2)
|
Check all hose clamps before the raw water pump,tighten them with a nutdriver not a screwdriver. Then remove the strainer bowel and check to make sure there is a gasket between it and the strainer assembly. Make sure raw water pump is on correctly since it can be mounted either way and one of the ways won't pump
|
|
Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
Post Options
Thanks(0)
|
How do I know if water pump is installed correctly. According to instructions the screw on the side of the pump should face motor. It does. Does it matter how the impeller is installed. I installed it per directions but the fins have a slight bend to them. Could I have installed impeller incorrectly if so how do I determine the correct orientation?
|
|
Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
Post Options
Thanks(1)
|
You have the pump correct then. Might just want to put a new impeller in on a new to you boat,use a genuine Sherwood impeller #9959 for a G-21 pump. Here is the assembly pdf for those pumps
|
|
Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
Post Options
Thanks(0)
|
thank you for the quick reply. I installed a new sherwood impeller after the first outing when it first showed signs of over heating. Installed and connected hose to outlet hose of strainer. Boat cooled and when I rev'd engine in neutral, the water pulled faster than the hose could supply so I set to idle: at idle temperature gauge held to about 153 degrees.
based on that can I assume intake pump is good and that there might be problem prior to outlet of strainer. Can I take strainer out and just put in a temporary hose fitting to eliminate the strainer as a potential problem. |
|
velde99
Platinum Member Joined: November-04-2012 Location: Tampa Florida Status: Offline Points: 1108 |
Post Options
Thanks(1)
|
Check impeller is installed properly. Check for any clogged hoses, and then I'd check the thermostat. If Iran not opening all the way- engine may over heat?
|
|
Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
Post Options
Thanks(0)
|
Are there any pics of impeller installed correctly I have a pic of how I installed that I can compare to.
|
|
Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
Post Options
Thanks(0)
|
Just hooked hose up to intake.
Started engine and then turned on hose The water is flowing through the engine and it is heating up. It is controlling at about 155 degrees. The risers and manifold outlets are cool and water is coming out of the exhaust I rev the engine and I can see the water hose start to collapse and I return to idle so as not to starve the pump of water is there anything I should look for while doing this that will tell me what the problem is when in the lake |
|
bb12
Senior Member Joined: March-24-2009 Location: Kansas, USA Status: Offline Points: 355 |
Post Options
Thanks(1)
|
Yes you can eliminate the strainer and test in the driveway to see if that's your culprit. I wouldn't put it in the lake without it though.
Run the boat in the driveway by filling a 5 gallon bucket full of water and stick the intake hose in it. You'll have to keep the garden hose running in it to keep it full. Once you get your overheating issue resolved you can install a Timmy T. |
|
1989 Ski Nautique 2001
|
|
Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
Post Options
Thanks(0)
|
Ok thanks everyone. I just started following the hoses and found that the transmission cooler has a small leak on the bottom side of the cooler near the hose connection. Water is spraying out a fine mist. I had my girlfriend rev the engine and the leak stopped I think I found the problem Correct me if Im wrong but a leak that disappears when I rev engine means that the raw water pump is pulling more water and thus reduces the water available to leak pout and would allow for air leak into the system at the lake thus breaking the suction. Does that sound right?
|
|
bb12
Senior Member Joined: March-24-2009 Location: Kansas, USA Status: Offline Points: 355 |
Post Options
Thanks(1)
|
The cooler itself is leaking or the hose connection?
|
|
1989 Ski Nautique 2001
|
|
Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
Post Options
Thanks(0)
|
The cooler itself the hose connect to the cylindrical end, and then the cylindrical end forms a cone the attaches to the body of the cooler. There is a seam there and a similar seam at the top The bottom seam is leaking, I checked transmission, no water in tranny. No Tranny oil in water either. so it looks like I need a new tranny oil cooler or can I braze that seam and seal it?
|
|
bb12
Senior Member Joined: March-24-2009 Location: Kansas, USA Status: Offline Points: 355 |
Post Options
Thanks(1)
|
If it were me I would just get a new cooler. They are a fairly inexpensive part...Nautiqueparts.com or SkiDim has them.
|
|
1989 Ski Nautique 2001
|
|
Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
Post Options
Thanks(1)
|
Yes much like trying to drink thru a straw with a hole in the side of it. Impellers can go in any way,if the vanes are backward to the rotation they will quickly flip over with no harm done. |
|
Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
Post Options
Thanks(0)
|
Thanks, Just ordered from SkiDim. What is a Timmy T?
|
|
bb12
Senior Member Joined: March-24-2009 Location: Kansas, USA Status: Offline Points: 355 |
Post Options
Thanks(1)
|
Go to google and type in "Timmy T correctcraftfan"
It's basically a homemade hose adapter you can plumb into your cooling system to easily run your boat out of water. Pretty handy and costs about $12 to make. |
|
1989 Ski Nautique 2001
|
|
Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
Post Options
Thanks(0)
|
Check here about 5 posts down---
|
|
Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
Post Options
Thanks(0)
|
I will install new tranny cooler and get back to this thread with results.
Can anyone verify which tranny cooler I need for a 1990 Ski Nautique. |
|
bb12
Senior Member Joined: March-24-2009 Location: Kansas, USA Status: Offline Points: 355 |
Post Options
Thanks(1)
|
I believe you need PCM # R147003, the 5" one, but someone else will confirm... or call Vince or Richard at SkiDim in the morning.
|
|
1989 Ski Nautique 2001
|
|
Jonny Quest
Grand Poobah Joined: August-20-2013 Location: Utah--via Texas Status: Offline Points: 2955 |
Post Options
Thanks(1)
|
Your raw water hose is starting to collapse? The hose from the water intake should be a wire reinforced water hose. The purpose of the wire reinforcement is to prevent hose collapse. Hose collapse and air leaks are a good recipe for over-heating. JQ |
|
Current
2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
|
Hollywood
Moderator Group Joined: February-04-2004 Location: Twin Lakes, WI Status: Offline Points: 13513 |
Post Options
Thanks(0)
|
water hose = garden hose?
|
|
Duane in Indy
Platinum Member Joined: October-26-2015 Location: Indiana Status: Offline Points: 1578 |
Post Options
Thanks(1)
|
If you decide to pitch it, then pitch it my way. I will pay shipping charges. Duane |
|
Keep it as original as YOU want it
1978 Mustang (modified) |
|
Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
Post Options
Thanks(0)
|
Sorry, the garden hose was what was collapsing. The intake hose was fine.
|
|
Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
Post Options
Thanks(0)
|
I had a friend braze the seal. He is bringing it by so I can have as a spare if it holds. If i change my mind you can have it.
|
|
Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
Post Options
Thanks(0)
|
I also had a friend that gave me an oil cooler from his mastercraft PCM with a powerslot transmission. Its longer, and thinner than mine but it has the same fittings. Can I use it so I can take the boat out sooner. not tags on either tootle me about pressure or cooling capacity.
|
|
8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
Post Options
Thanks(0)
|
I suggest pressure testing before you install it on the engine. The typical failure is from freeze damage from improper winterizing. Even though it's the outer shell that seems to split first, you what to make sure the inner tubes that circulate the ATF are good. so you don't end up with water in the trans. |
|
Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
Post Options
Thanks(0)
|
Great point about pressure test
|
|
Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
Post Options
Thanks(0)
|
New oil cooler on. New RWP impeller installed All hose clamps tightened and Strainer seal done. It still does not suck water up from the bucket. Any ideas? on what I can Check Can back pressure come from thermostat not opening. I have not replaced thermostat, but plan to tomorrow. Intake is open and clear. All hoses are open and clear. .
|
|
Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
Post Options
Thanks(0)
|
No back pressure since all extra water goes out thru the exhausts,thermostat only lets water out of the block.. What I'd try before I'd take anything else apart would be to remove the hose that the red arrow points to, put it in another bucket . Connect and fill your bucket connected to your intake hose,start the engine and see if the raw water pump is pumping. Don't run it long, just enough to see if its pumping and report back.
|
|
Greektique
Newbie Joined: May-15-2017 Location: Charlotte, NC Status: Offline Points: 29 |
Post Options
Thanks(0)
|
Does the hose from the intake have to go under the tranny to the strainer or can it go over the tranny to the strainer. It seems to be a mute point because the pressure wold not change, but i want to make sure
|
|
Post Reply | Page 12> |
Tweet
|
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |