How do I test my Evinrude VRO?
How do I test my Evinrude VRO?
Start the engine, and monitor the pump cycles by using a fuel pressure gauge or by putting light finger pressure on the outlet hose.
- At 800 RPM, the oil level in the hose should drop 1″ in approx. 5 pulses.
- At full throttle, the oil level should drop 1″ in approx. 3 pulses.
What does VRO mean on Evinrude outboard?
Sorrry, couldn’t resist, it stands for Variable Ratio Oiling. Basically it works like most two stroke oiling systems by varying the amount of oil needed to mix with the gas for your motor.
What does a VRO pump do?
The travel of the air motor pumps the fuel and the oil together to the carburetors and the alarm system monitors the oil pressure counts. Just like manually premixing the oil and gas, the VRO (OMS) automatically does the same thing and sends that fuel mixture to the carburetors.
How do I stop my outboard from smoking?
Using quality oil will go a long way to drastically reduce the amount of smoke your motor pumps out. Try using synthetic oil. Evinrudes ETEC XD-100 is well known to nearly eliminate smoke due to oil combustion.
How do I know if my fuel pump diaphragm is bad?
Attach another fuel line to the outlet and clamp it off tightly. Prime the bulb, and keep an eye on that hole in the back of the pump. If fuel is visibly leaking through it, your diaphragm is bad.
Why does my Evinrude smoke?
Why Does My Outboard Motor Smoke? An Outboard Motor smokes because it is burning oil. Two-Stroke Engines burn oil all of the time. Four Stroke Engines burn oil at startup mainly because of oil left in the cylinders or all the time with an oil leak.
Can you bypass A VRO oil pump on an outboard?
Running an older outboard can present some challenges. One of them is the constant worry of having the VRO oil pump go out on you. Many boaters elect to bypass a Johnson or Evinrude oil pump. There is a ton of information in the Internet on how to do this. The problem with this is that you still have a VRO oil pump acting as a fuel pump.
Can you bypass a Johnson or Evinrude oil pump?
Running an older outboard can present some challenges. One of them is the constant worry of having the VRO oil pump go out on you. Many boaters elect to bypass a Johnson or Evinrude oil pump. There is a ton of information in the Internet on how to do this.
Do polyurethane fuel lines deteriorate over time?
There is also a durability factor, unlike rubber compounds, Polyurethane line does not deteriorate. The original fuel lines on this 1988 Johnson 40HP outboard has some real odd ball sizes. I used replacement lines that were close and provided a snug fit then secured them with either a tie wrap or hose clamp.
