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Captain
Posts: 34
Registered: ‎06-12-2017

can someone explain the different components and sensors used to deliver oil on a newer Etec?

was readinging thi thread 

 

http://community.evinrude.com/t5/Owner-s-Zone/No-oil-light-and-alarm-2016-150-ETEC/td-p/28376

 

and got curious on the whole oil injection system.

  • the components to deliver oil
  • the components to sense trouble
  • the method used to vary the oil delivery IE Ratio
Captain
Posts: 131
Registered: ‎08-20-2017

Re: can someone explain the different components and sensors used to deliver oil on a newer Etec?

Oil tank line runs to the electric oil pump on the engine. The pump is similar to a fuel injector as it pumps a set amount of oil with each pulse. Coming out of the pump there are clear oil lines, one to each main bearings and one to each cylinder wall. There are a couple of recirculation hoses that will use crankcase pressure to push any excess oil at the bottom of the crank up to the top of the crank through check valves.
The EMM controls the electrical circuit of the oil pump and varies the frequency of the pulses according to engine speed and load. The oil pressure sensor is actually a switch that opens and closes with each pulse of oil pressure from the pump. If the EMM sees fewer pulses from the switch it will run the oil pump at maximum volume, set a trouble code, turn on the no oil light and reduce engine speed. In cases of no oil codes that I have seen due to a sticking sensor or a leak, the engines come in flooded with oil