I have a 96 Seadoo XP that starts and idles properly (slightly on the high side), but as soon as you press the throttle it misses heavily, coughs out some white smoke, and then eventually dies. When it dies, it is very abrupt. There's not time to let off throttle or pull the choke to try and save it. Sounds very similar to this http://www.youtube.com/watch?feature=endscreen&NR=1&v=kS1c53_xz_4
Engine is remanufactured, only 6 months old. Carbs were rebuilt by a professional at that time. New oil pump, oil lines, and rave valves.
Here is what we have tried:
-Replaced the spark plugs
-Replaced the rectifier (meter was showing 16.1 volts at battery while running)
-Emptied the fuel tank completely bone dry, checked the filter at the bottom of the tank connected to the baffle and it was fine (we cleaned it anyway while we had it out and put fresh fuel in.)
-Cleaned the fuel filter just under the steering bars
-Took apart and cleaned the fuel selector switch
-Took apart the carb enough to get at the little fuel filter in it, this was clean as well
-Checked both cylinders for compression and they both registered right around 130 psi
-Adjusted the low speed set screws on the carbs according to specs in the manual (1 full turn counterclockwise after it was turned clockwise till we felt resistance.)
-Adjusted the high speed set screws on the carbs to specs (these can only be turned a quarter of a turn in either direction, (both were set at the same position.)
-Battery is fully charged
None of these made any difference.
We started testing electrical pieces according to the FSM. The DC-CDI is testing bad. None of the resistance values match what is listed in the manual. Do these go bad on their own? It is a very expensive part new, and there aren't too many used ones on ebay. Could a bad CDI be causing the problem I am having?
Any other suggestions or has anyone had a similar experience?
Engine is remanufactured, only 6 months old. Carbs were rebuilt by a professional at that time. New oil pump, oil lines, and rave valves.
Here is what we have tried:
-Replaced the spark plugs
-Replaced the rectifier (meter was showing 16.1 volts at battery while running)
-Emptied the fuel tank completely bone dry, checked the filter at the bottom of the tank connected to the baffle and it was fine (we cleaned it anyway while we had it out and put fresh fuel in.)
-Cleaned the fuel filter just under the steering bars
-Took apart and cleaned the fuel selector switch
-Took apart the carb enough to get at the little fuel filter in it, this was clean as well
-Checked both cylinders for compression and they both registered right around 130 psi
-Adjusted the low speed set screws on the carbs according to specs in the manual (1 full turn counterclockwise after it was turned clockwise till we felt resistance.)
-Adjusted the high speed set screws on the carbs to specs (these can only be turned a quarter of a turn in either direction, (both were set at the same position.)
-Battery is fully charged
None of these made any difference.
We started testing electrical pieces according to the FSM. The DC-CDI is testing bad. None of the resistance values match what is listed in the manual. Do these go bad on their own? It is a very expensive part new, and there aren't too many used ones on ebay. Could a bad CDI be causing the problem I am having?
Any other suggestions or has anyone had a similar experience?