check your pump
I have a GSX RFI with the same problem. Did you find the answer to your problem? Thanks Johnjoshy28 said:Hi guys (heres a short story about my problem)
I have recently bought a GSX Rotax fuel injected Seadoo. Its been fine until today. I am riding and suddenly it has no power, it feels like the petrol line isnt pumping. Anyway, i slowly bring it back into shore, and take it home. I then change sparks plugs and take it out the next day..I am riding for about 20mins with no problems... and BAM!!! same problem,it has no power when i try to accelerate. I then bring it back to shore and test it on the trailer, It is fine!!! go figure, It did this to me three times. WHAT shoud I do???????? What is the problem?????? I am scared to take it out nymore because i have been poking and proding around. Please give me a tip on the problem..cheers