1990 Ski Nautique Overheating

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

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?

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.

Are there any pics of impeller installed correctly I have a pic of how I installed that I can compare to.

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.

The cooler itself is leaking or the hose connection?

If it were me I would just get a new cooler. They are a fairly inexpensive part...Nautiqueparts.com or SkiDim has them.

Thanks, Just ordered from SkiDim. What is a Timmy T?

Check here about 5 posts down---

I believe you need PCM # R147003, the 5" one, but someone else will confirm... or call Vince or Richard at SkiDim in the morning.

water hose = garden hose?

Sorry, the garden hose was what was collapsing. The intake hose was fine.

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.

Great point about pressure test

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.