Where does the gas/oil get mixed in oil injection seadoos?

[Steve O'Meara]

So yesterday I asked about siphoning old gas from a seadoo. I solved the problem by using a self priming bulb and going in through the top of the tank after removing the fill hose and connecting extra hose to reach the bottom of the tank. I removed 12 gallons of old gas which I believe due to color is already mixed with oil. Does anyone know exactly how the oil injection system works? So if this is mixed gas I have removed it will only be good to put into two stroke machines such as weed wacker etc. I am not entirely sure what to do with all of this gas? Ski does not currently start and has had same fuel for two years so that is why I decided to take it out.

Any help is greatly appreciated.

 

[Ckrawiec]

On a stock Seadoo machine with oil injection, a little pump pushes oil into the carbs while the engine is running, so that is where the Oil/Gas get mixed (per se).

Many people, for some reason, REMOVE the oil injection system on the Seadoos and go to a pre-mix scenario....dumping oil into the gas tank when they fill the gas tank.....assuming they can magically get the correct oil/gas ratio (which is practically impossible since you can't tell precisely how much gas is left in the tank, etc.....) SO, pre-mixers usually just end up spending MORE money on oil than necessary because they are using too much and just burning it up.

The gas/oil mixture you sucked out of the tank can probably be used in any other two-stroke engine (weedwacker, chainsaw, etc....) but it may smoke a bit as the oil gets burned up (if there is too much oil)....who knows what the RATIO of gas/oil is that you pulled out????

 

[Steve O'Meara]

On a stock Seadoo machine with oil injection, a little pump pushes oil into the carbs while the engine is running, so that is where the Oil/Gas get mixed (per se).

Many people, for some reason, REMOVE the oil injection system on the Seadoos and go to a pre-mix scenario....dumping oil into the gas tank when they fill the gas tank.....assuming they can magically get the correct oil/gas ratio (which is practically impossible since you can't tell precisely how much gas is left in the tank, etc.....) SO, pre-mixers usually just end up spending MORE money on oil than necessary because they are using too much and just burning it up.

The gas/oil mixture you sucked out of the tank can probably be used in any other two-stroke engine (weedwacker, chainsaw, etc....) but it may smoke a bit as the oil gets burned up (if there is too much oil)....who knows what the RATIO of gas/oil is that you pulled out????

Thanks for your reply. So if the oil injection does not happen in the tank..........didn't I suck out straight gas?? It was green in color (two years old) however, I am thinking the color is from the fuel stabilizer I used which was green in color. I have never pre-mixed not really sure why people do this unless their oil injection is not working. To your knowledge is there any oil injected into the tank? I am trying to figure out what to do with all of this gas and just want to be sure if it is straight or mixed before I decide. All of the oil lines are very complicated and confusing to me............I have tried to research the manuals but, have found them not too informative on this topic.

Thanks in advance

 

[Ckrawiec]

>> So if the oil injection does not happen in the tank..........didn't I suck out straight gas?? >> Well, yes probably but if there is/was anything put into the gas tank, like oil or fuel stabilizer, then that is what you probably removed....could be any color but green is a likely candidate
>> To your knowledge is there any oil injected into the tank? >> There is NO OIL injected into the fuel tank, Fuel and Oil are completely separate systems in a SeaDoo ski.

Straight gas or even mixed gas or stabilized gas can be used in pretty much any internal combustion engine....may smoke a bit......lawnmower, car, chainsaw, log splitter.....anything really. The only caveat is if the fuel has water in it....but that'll be obvious as it would separate out.

OIL lines are NOT complicated at all....I think you mean the fuel lines....but even those are not that complicated once you understand where they all go.....supply, return, reserve, vent, fuel separator selector, fuel/water separator....the manuals should provide a pretty clear diagramitic layout of the fuel lines....just follow each one, one at a time.....it just looks like spaghetti initially.