HondaJetski

So i have a 2003 Honda Aquatrax F-12x and the last time i took it out in the ocean it sounded like the engine blew and stopped running. I tried to start it and it would only run for a lil bit then shut off.

So i checked the engine out and it looks fine but in the back of the jet ski it looks like something blew out of the plastic box above the exhaust.

Does anybody know what is the plastic box above the exhaust is?
Has anybody had this happen or know what it could be?

jrinjax

Have you done a compression check yet? What blew out the exhaust? Maybe a dropped valve+a turbo failure.