If your injection system is working, do not go to premix. This is a bad idea. And yes, your right, I do not recommend the premix. In the long run, it'll damage the Rotax engine too. It's caused from carbonizing. This is when the oil is burned to a point it makes a glass like barrier on your metal surfaces. This will slow the heat transfer, insulating the motor.
The TCW 3 oil needs to go. But, if it's been running this oil for a while, don't panic. You'll be fine. You can go from mineral to synthetic but not from synthectic to mineral.
I use the Quicksilver brand of "Full Synthetic" oil. It's a non NMMA, non TCW-3 oil. You may find this at your local Mercury dealer. Just make sure you read the back of the bottle. It comes with a recommendation that it can be used in Seadoo's specifically.
Yeah, either or. Bottom line, and to answer your original question, as long as you get that TCW3 outta there soon youlll be good to go. And just fwiw the oil pump volume is regulated by throttle position not RPM, there's a throttle cable that goes to the pump. Pretty simple yet effective system.
When your oil is low enough, I'd remove the oil line that goes to the top of the tank. This is the vent off your rotary. Then, at the bottom of the tank, you have two lines. One with a small white filter in it. The filter is the line going to your oil injection pump. Don't mess with it.
Remove the other line, this is the inlet to your rotary. Take a shop vac that you don't mind getting a little oil into. Hold that inlet line from the rotary into the shop vac. The oil will be removed from the rotary chamber, as long as you also have that vent line open.
Now, when you attach everything, fill up with the synthetic oil. The oil remaining in your injection system will burn off and then, you'll be into the synthectic. Your done. Your rotary chamber will automatically fill with the new oil and your now injecting it.
Injection pump? This is a simple gear type pump that is self lubricated by the oil it's moving. If you have no frey's in your cable ends, do not go to premix.
The Rotax engine works on a variable rate of injection. Hypothetically, when your at idle, you may be at a mix of 12:1 or less. When at WOT, you may be at 50:1. If you premix, this means your setting the motors oiling system up for full power running only. Which means, at lower speeds, your going to be fouling plugs, smoking really bad and eventually, carbonizing the internal components of the engine. Do not disconnect your oil pump and premix unless you are certain you have a problem with your oil pump.
BTW, I used to be 18 once. Even then, as a hot rodder, oiling properties were still the same. Premix is not cost effective and not good for the Rotax rotary engine..........:cheers:[
Thanks alot for the reply snipe, i had figured this, since the pump works on how fast the engine is running (rpms) im guessing. Im gonna keep my oil pump, the ski i have was meticulously maintained, and about 30 hours on the rebuild makes me believe the pump is just fine. plus ive been told the 717 is a pretty reliable motor, with the right care of course. good to know not to panic, yet.. aha
again thanks alot snipe, im gonna copy and paste this for when i switch over.
good peace of mind, :cheers:
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