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Odd problem

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joesympatico

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I had an odd thing happen. last week I removed the carbs and cleaned the filters changed all the fuel lines. got it back in the water today, started up fine ideles great.Got it out on the main lake to open it up and it came out of the water fine but could not get it to go to WOT would not go above 6k. turned around after 5 mins and found the engine slowly bogging down , by the time I got back I could not get more than 3k at wot.

Put ski on trailer and pulled the plugs to find the mag carb wet, it almost looks like water but the funny thing was when I looked at the plug it had 3 tiny balls between the electrode and the inner side of the plug. Any ideas om this?:(
 
I would do a compression test on the engine, to see what is going on inside.
Here is some information;
You'll need a compression tester. Go to Auto Zone. I think they sell for like $25.00. The compression gage, will screw in the cylinder head in place of the spark plugs. To test compression, remove both spark plugs. Place spark plug caps on the plug cap studs near the cylinder head to ground the empty caps. This completes the circuit of the ignition electrical system and prevents any electrical problems from the caps being un grounded. Using the correct adapter for the threaded end of the tester,( same length of the spark plug threads length)screw in the tester in one plug hole. Hold the throttle wide open. Push the start button. Watch the compression gauge, when it peaks out at the most compression, let go the start button. Read the psi number. I would do it 3 times to be sure it is accurate. Check both cylinders the same way. The ideal compression is 150 psi per cylinder. If it is less, it's not a problem as long as they are close to being the same. If the psi is less than 90 it might need be time for a tear down and a rebuild. If the psi in 1 cylinder is say 140 psi and the other is 80 psi you need to tear down and repair. This difference is a lot then there is a problem. I hope this helps you.

Karl
 
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