One engine surges, the other engine revving too high - help

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Water Crafts
2009 Wake 230 510hp
#1
2009 Wake 230 supercharged ran great last year, but when I tried it out on the water last night, both engines fired right up and idled fine, but under full throttle one engine revs really high past 8,000 rpms and the other one surges between 5-6,000 rpm intermittently. Tried several passes with no luck. Someone else on this forum had the exact same problem with theirs, but never posted what fixed it. Hopefully someone can help me out. Thanks in advance.
 


Messages
65
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Location
Spokane, Wa
Water Crafts
2007 Sea Doo 230 Challenger Se
#7
Definitely check superchargers like above. Also though, I had a similar issue couple years ago where idle ran rough, couldn’t get boat up to speed (40mph tops) etc and one was higher than other, only about 1k rpm difference and not over 8k though. Was also taking on a decent amount of water, took couple minutes to drain on the ramp. turned out was an exhaust hose that had slipped off because of loose hose clamp.

Here’s a video showing the surging on starboard tach..
 

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