1995 Polaris SL750... FULL OF OIL???

[Dante04SRT]

My neighbor and I began to tear into his 95 Polaris 750 PWC this weekend. He got it on trade about a year ago and hasn't touched it since.

We got a battery, and checked the plugs, hooked the water up and attempted to spin it over - The engine wouldn't really spin. We took the plugs out and attempted to start it - Premix oil shot out of the cylinders - We tried to empty all 3 cylinders of all the oil with the starter - I'm fairly confident that we got most of it in the top end. The bottom end, I'm not sure. If anyone can offer any suggestion, that would be GREAT.

My big question is, what would cause the engine to completely fill with oil? Since most of the lines are buried under the engine, I'm unable to see just where everything connects. If I am correct, the fuel pump is just a vacuum pump on the motor, but were does the oil get injected/mixed? Is it possible to disable the oil mixer and just mix the oil myself before I put it into the gas tank?

It looks just like this one:
http://www.pwctexas.us/spolaris95sl750a.html

Any help would be great. Thanks!

 

[NMPeter]

Re: 1995 Polaris SL750... FULL OF OIL???

the fuel inlet needles in the carbs are leaking. Whe the tank pressurizes, fuel is forced into the engine. Good reason to shut the fuel off before storgae. If the tank vent is defective/stuck it's typical for this to happen if the ski is left outside.

It's messy and will take a few sets of plugs, but you are nearly there.

Carbs may need a rebuld/clean up. Small price compared to the time/mess/risk of dealing with this problem more then once

 

[Dante04SRT]

Re: 1995 Polaris SL750... FULL OF OIL???

We wound up not getting everything out turning the motor over... So, we wound up turning the jetski over! We used a forklift to spin it and let it sit overnight. We turned the engine over a few times during to move any remaining oil. Worked great - We're now oil free. It was still amazing how much oil was left inside!

Anyway, we now have the oil out and are getting fuel, but no spark. We replaced the CDI with a used one, but it appears that one is bad too. I've gone through all the other testing mentioned in the service manual and still no spark, all signs point to CDI...

We'll see!