Rivernut Posted July 10, 2013 Share Posted July 10, 2013 Hey everyone, my oil injected 25 yamaha 2 stroke has an issue. I am presently running 50:1 after disconnecting the injector pump, after it started running rough when giving it any throttle, and the red oil light came on.Would start and idle fine. Any way to tell if its the sensor or the pump itself? Was quoted 400 if its the pump. Pump I cannot do. But the sensor is in the oil tank connected to the cap. If worst comes to worst, I will just continue to run the premix. Thanks for any help, Mike. aka Rivernut Quote Link to comment Share on other sites More sharing options...
Rivernut Posted July 13, 2013 Author Share Posted July 13, 2013 Ok, thanks. Quote Link to comment Share on other sites More sharing options...
Rivernut Posted July 20, 2013 Author Share Posted July 20, 2013 ANYONE? Quote Link to comment Share on other sites More sharing options...
delcecchi Posted July 22, 2013 Share Posted July 22, 2013 Uh, what is the question you have? How to change the sensor? How to tell what is wrong? How to change the oil pump? I would fix it, but I hate premixing gas since it is annoying if you are using a quantity of gas. Quote Link to comment Share on other sites More sharing options...
Rivernut Posted July 22, 2013 Author Share Posted July 22, 2013 As stated in my post, how can you tell if it is the sensor or the pump? Quote Link to comment Share on other sites More sharing options...
kerryd15 Posted July 23, 2013 Share Posted July 23, 2013 On my mercury you can perform a test with an ohm meter. Either contact a dealer on how to test or download the manual. You can also do an internet search but without knowing the year and the letters behind the model its pointless. Quote Link to comment Share on other sites More sharing options...
boatfixer Posted July 23, 2013 Share Posted July 23, 2013 Year and model number please. I'm not even sure there is a rotation sensor on the oil pump anyway. Try disconnecting the wires coming from the reservoir. If the tank is empty, the light will come on. Quote Link to comment Share on other sites More sharing options...
Rivernut Posted July 23, 2013 Author Share Posted July 23, 2013 Thanks, I"ll try that. Its a 1991, and I will get the model # Quote Link to comment Share on other sites More sharing options...
boatfixer Posted July 26, 2013 Share Posted July 26, 2013 Then it has to be the oil level sensor. There is no sensor on the pump Quote Link to comment Share on other sites More sharing options...
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