i am not real familiar with this type motor(set up kinda like an outboard) ive work on all kinds of engines except boats besides my seadoo. my friend has a 94 bayliner jazz that will start and idle but bogs when try to throttle.as dumb as this sounds....none of the boat places wanna look at so im his last shot. it has good compression,it is getting spark on all 3 cyl. so i dont know if to look at fuel pump/carbs, or if is a electrical issue like timing etc. i am not familiar w all the electronics involved in these type ign systems. thanks for any help....