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I’m looking for some knowledgeable help with my 2005 WaveRunner FX. I have had this machine for two summers now with no issues. When I took the ski out last week it fired up with no issues but after we launched it I noticed that when you hit the throttle the engine would rev-up but the ski didn’t jump up and go, as if the intake was clogged. If you increased the throttle slowly everything worked and you could hit the normal top speed of 50 to 55. Then after a couple minutes this loss of power went away and everything was fine. So I thought that maybe there had been a clog of weed in the intake.
At the end of the day when we were putting the machine back on the trailer the loss of power came back, but once again only when you hit the throttle fast. When the throttle was squeezed slowly everything was fine. On top of this when I got home and checked the engine out I found there is some water in the oil, not a lot but some, and the forward most cylinder sparkplug is firing but burning very black. The engine still fires right up.
Are these issues related or are they two separate problems? I know my way around an engine fairly well but have no experience with these engines.
I could use some good advice on where to start.
At the end of the day when we were putting the machine back on the trailer the loss of power came back, but once again only when you hit the throttle fast. When the throttle was squeezed slowly everything was fine. On top of this when I got home and checked the engine out I found there is some water in the oil, not a lot but some, and the forward most cylinder sparkplug is firing but burning very black. The engine still fires right up.
Are these issues related or are they two separate problems? I know my way around an engine fairly well but have no experience with these engines.
I could use some good advice on where to start.