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What part of Florida are you in? I spend a lot of time in Ft Myers in the winter and have a lot connections for seadoos there and typically am buying and rebuilding/fixing year-round skis but do some boats as well. My advice is to buy fresh water if possible and newer the better but this isn't...

No, the ECU is sitting on top of the intake manifold

switch ECUs and see if the problem follows the ECU

Dealerships recommend a lot of things that don't need done so they can make more money. Every driveshaft and impeller in saltwater turns into a rusty mess in just a few years and they still work fine. My opinion is don't replace a driveshaft just because it has rust. If your ski is running...

It's the cooling input line from the pickup inside the pump. When your engine is running, it pumps water through your cooling system of the exhaust manifold and pipe. When you tow too fast, it has the same effect but since there is no exhaust pressure to blow it out the exhaust it fills up the...

Sounds like you have a drag on the engine which can be a supercharger bearing, pump bearing, engine bearing, etc.

So the 2002 two stroke has the same drive shaft as your four stroke?

Check supercharger. When was it rebuilt last?

I think you're going to need BUDS for a new ibr for the initial flash, marry, and calibration.

Change the security coding to all "F"s and write it. Then restart and it will tell you that the coding does not match. Don't change it when it asks. That should then give you the option to flash the cluster as if it thinks it's new and give you the options and then choose MY2011.

Yes, module, cluster, update or configuration(can't remember) and you should be able to flash the MY2011 software and then remarry to the ECU so security codes match.

Be careful not to get the gear too hot or you will anneal it and lose it's hardness.

The timing chain gear is pressed on the crankshaft with a pretty substantial interference. I have replaced them but it is not simple to do. They can be cut off or pressed off with a very large machine shop press. To put the gear back on, it requires heating of the gear to about 800 degrees...

You have to have the maptuner system which is about $500 in addition to the $349 license but this can get you to 110hp. To get to 90, it is simpler process and there are people that can do this for not a lot of money.

Maintenance is fairly simple and pulling the deck off is pretty simple, just takes a little time. Wear ring and impeller changes are also pretty simple. The spark, in general, is a simple ski to work on and maintain and is similar to winterize as all the 4 strokes.

The 90 hp will only go around 50-52, the 60 hp will be around 40-42. On the sparks you can't really get a good look at the engine but you should check the oil and look in the best you can looking for corrosion and oil leaks. More importantly, it should idle and run well as you mentioned.

Change plugs first. Looking at them will tell you nothing.

You can pull the connector at the fuel rail and every time you put the key on it will pump for about 10 seconds and a pint of fuel. Takes a little while but easy to drain the entire tank. You can snake a weighted flexible tube down the filler but not the easiest thing to do. Water intrusion...

Spark plugs fail frequently on the 4tecs so probably not related to your water intrusion, just a coincidence more likely. You can't tell by looking at them and have had several experienced auto techs tell me that it can't be the spark plugs because it's a 4 stroke and they don't fail or that...

All the 155 4tec engines are basically the same or can be easily interchanged with minor changes from 2002-2016. All the supercharged engines are not interchangeable due to different pistons and compression ratio. The 130s are almost the same except for a different camshaft which you could...