2005 four stroke 60 horse Bigfoot

by John
(Cadillac Mi )

2005 four stroke 60 horse Bigfoot I was going across the lake wide open at 6000 RPM and then all of a sudden it went to 4500 PMs
The engine sound and everything didn’t change but I’d drop dramatic horsepower?
Thought I wrapped up into a bunch of weeds I stopped reversed it lifted the motor and found that there was no weeds
Not sure if I lost a call back or a cylinder

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