i got that sinking feeling

[dukeschuff]

last year my boat sank. this forum helped me save the motors and with em the boat itself. thanks so much. finally figured out that the exhaust port on port side had cracks in the plastic sleeve. very hard to see. anyway, all is well now except i keep burnin rave valves but i will figure it out eventually. thanks seadoo forum, eric

 

[pincusa]

I'm guessing your mixture is lean (maybe from a clogged carb) and that's why you're burning the valves. Maybe a carb cleaning is in your future
Good luck

 

[dukeschuff]

only one engine has the problem though!