96 Seadoo spx - fuel mixture update

[wildsweety1116]

Back when these engines were built they did not have a mixture system that adapted to the amount of power you gave the seadoo. I am wondering if anyone has successfully put a new system in there that changes the oil and fuel mixture while driving. or if anyone knows where there is one that is available.

 

[mikidymac]

I am not sure what you are referring to.

All seadoo's have had a variable rate oil injection system from the start that is connected to the throttle so the more throttle you give it the more oil that gets injected.

It is probably the most reliable injection system ever made and is not RPM dependent like the Japanese skis use.

 

[wildsweety1116]

I am not sure what you are referring to.

All seadoo's have had a variable rate oil injection system from the start that is connected to the throttle so the more throttle you give it the more oil that gets injected.

It is probably the most reliable injection system ever made and is not RPM dependent like the Japanese skis use.

So all Sea Doo's from all years have that system then? If so then why would I be fouling out spark plugs after a day of riding?

 

[mikidymac]

Yes, and even your SPX. There are tons of reasons for fouling plugs.

1. Oil pump not adjusted correctly. Check the manual.
2. Wrong oil being used, only API-TC rated oil.
3. Bad crank seals.
4. Bad rotary shaft seal.
5. Poorly adjusted/dirty carbs.
6. Wrong plugs, Only NGK BR8ES.

Too much fuel can cause plug fowling, not just too much oil.