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Discussion Starter #1 (Edited)
This season my machine gave me an overheating alarm about 100yrs from the dock.
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I took it home, flushed the cooling system, and noticed that suddenly my left vent was not discharging cooling water. I flushed numerous times, took it out again, and had the same experience again.
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I theorized that I must have forced sand into the rear cooling water inlet when I struggled to get it off a sand bar a few months back. My only focus at that point in time was using a rope to pull the ski backwards and into enough water to make it float. While I was doing this I was unknowingly forcing LOTS river sand into the rear nozzle. All that mattered then was that I rescued myself and got back to a safer place. I was in the backwoods with no cell phone tower in reach. Yes I do stupid things but not intentionally.
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My plan of attack for resolve is to disassemble the machine and check all cooling paths for sand, salt, and anything that should no be there. In addition I will measure the Thermosensor and Thermoswitches to see if they are operating within the design specifications.
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Today I validated my suspicions that the machine has ingested sand (and probably quite a bit of sand)
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In preparation for hoisting the engine, I was removing the Exhaust Hose from the Water Lock Device and I felt sand. I then saw sand. Lots of it.
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I think my suspicions are confirmed that my cooling system is clogged with sand.
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To be continued ....
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Water Lock Device
IMG_4558 by divepassion, on Flickr
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Sand on Water Lock Device
IMG_4557 by divepassion, on Flickr
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Just the beginning. This is sand I wiped off the nozzle of the Water Lock Device
IMG_4566 by divepassion, on Flickr
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Close up of sand in Exhaust Tube
IMG_4561 by divepassion, on Flickr
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Exhaust Tube
IMG_4559 by divepassion, on Flickr
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Discussion Starter #3 (Edited)
It is okay. It is not a problem for many reasons.

1. The ski is not on a schedule like my automobile for instance.

2. I have other means of getting on the water.

3. I have been through this engine before.

4. Its a small, cute, engine and easy to work on. (compared to an automobile)

5. It's lightweight (easy hoisting)

6. I have all the tools needed

7. I enjoy working on it.

8. I have the time
 

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Discussion Starter #4 (Edited)
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The really great thing about having owned this ski is the realization that my next boat is going to be a jet boat. I have an outboard now and have come to realize I prefer jets
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Discussion Starter #5
Tonight I will probably remove all the hoses from the machine and look inside the hoses for sand. I will also remove the mounting bolts. I have all hoses and electrical harnesses disconnected. So it is quickly approaching the moment in time where I need to purchase another hoist. I am starting to read about arbitrary ECU failures in older machines. I do not like the sound of that. Will keep my fingers crossed.
 

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Check harbor freight. They regularly put the 2 ton cherry picker on sale. Its the better of the two and has the longest reach.
 

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Discussion Starter #7 (Edited)
Cleanout - Hose, Coolant, FX140

Will definitely check them out. Thank you.

Continued the search for sand last night. Checking the hoses for free coolant passage and no restrictions.

I am not finding much sand yet but I am sure I will find lots as the disassembly continues.

Hopefully will loosen engine mounting bolts tonight.

IMG_4581. by divepassion, on Flickr

to be continued....
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