seadoo 1995xp

I've got a 1995 Seadoo XP and I've just noticed a fair bit of black oil coming out of the exhaust. I had it running with the hose attached on the trailer Seems strange because it's a premix 2 stroke... i.e. you premix the oil and fuel and then pour it into the fuel tank, so I don't understand...

Hi guys! I don't use to post here because I am spanish and is hard to me to speak in english.. :facepalm: , but now i'm desesperate and I hope you can help me . I have a seadoo 1995 xp ( 717 engine dual carb.) And it doesnt work good.. Every time I put the seadoo in the water It goes very bad...