Re: 93 seadoo's- 1 blows smoke, 1 doesnt?
Yes you can adjust the injection pump, look on the pump there is a mark on the pump and the cam that rotates with the cable tension from the throttle connector both marks are supposed to be lined up at idle if the mark is advanced it is getting more oil than it needs, adjust the cable tensioner to alighn the marks, you will need a mirror to see what you are doing, its under the carbs on the rotary valve cover, if the ski smokes a lot when you first start it up and the smoke subsides as you use it then its a leak in the rotary valve seal or crank seal by the rotary valve compartment, or the pump is bad and allowing oil to seep in the engine, usually its a seal and those will require a lot of work to repair. If its a crank seal it will require a new crank, can't service the seals without taking the crank apart. If its a rotary valve seal its a pain to change as you need to pull the engine out and seperate the case halves to access that seal, plus take the shaft apart to get to it. From what you are saying it is leaking pretty bad, so I would put my best guess on the crank seals, here is a way to resolve the problem or at least help it to stop smoking if its caused by the rotary valve compartment. There are two large hoses from your oil tank to your rotary valve compartment, remove them from your oil tank and take a hose from one tank fitting to the other to block off those fittings, get a radiator flush fitting from an autoparts store and loop the two rotary valve hoses to that fitting, the fitting has a removable cap in the center, fill the hoses with 40 wt motor oil and some seal conditioner, this will lube the berrings and shaft and treat the seals as well plus having heavier oil will slow the leak, since the hoses are transparent you will see when it needs any oil added and just add some when needed. It's the only way to resolve the problem without needing to rebuild the engine. And it is quite simple and inexpensive to do.
