How much is a used wave runner?

'92 Yamaha Wave Runner III problems. NEED HELP!?

• My aunt owns a 1992 Yamaha Wave Runner III which has had no problems its whole life. It has only been used on fresh water lakes. Recently, she gave it to me and my family and we had it running on our fresh water lake for about an hour, after an hour of running we were stuck in the middle of the lake to smoke coming out of the end. We managed to get towed back. Today, I took a look at the propeler area and i pulled out about 6 handfulls of seaweed that came from the lake, some new, some was old seaweed from previous use, I even pulled out a rope that was about a foot long. I cleaned out the prop area completly so it looks brand new. It still seems to be smoking even though there is more power in it from when all the seaweed was stuck in it. I need help to figure out where the smoke is coming from and what is causing it. Any ideas are appreciated. Thank you for reading this.

• Answer:

  is the oil / gas a mix or do you add the oil seperately? maybe burning too much oil.