Hello, I am having trouble with my 2017 Spark 3up w/o IBR. Bought it used with about 75 hours on it. Dropped it in the water, worked good and took it over to the dock, next time I started it up, there was no acceleration above 10mph and the RPM won’t go above 5500, when it gets to about 5k it instantly drops to 3k rpm and blares a beep with a CEL. No code displaying on dash either.

Not sure what the issue is and very disappointing as the seller replaced spark plugs, oil and filter, as well as batteries.

So far I have checked / tried:

Impeller / wear ring looks good Topped up coolant Took Spark plugs out, one was really loose so I torqued it back down.

Any advice would be greatly appreciated and thank you in advance!