89 Evinrude VRO Fuel Pump test

[bever]

1989 E40ELCEC
I suspect the VRO fuel pump is bad. Coming from the pump is a harness with Blue / Brown / Black wires.
With the 3 wire plug disconnected..... On the engine side of that plug I get voltage to the blue wire during starting. If I apply 12V to the pump side of the blue wire no pumping action. The black wire is grounded. The brown wire goes to the oil tank.
Is the pump bad? Or is there another test to perform? The replacement is $365.00
Thanks

 

[Kinchafoonee Bob]

Re: 89 Evinrude VRO Fuel Pump test

i have an 89 evinrude 110, this is not the answer you are looking for but, when my VRO went out i capped the oil inlet side on the pump and started mixing the fuel.

 

[WernerF]

Re: 89 Evinrude VRO Fuel Pump test

Do not apply voltage to the VRO pump! The VRO is not an electrical fuel/oil pump, but is powered from pressure/vacuum pulses of the bottom cylinder crankcase. The electrical connections are for the "no oil" alarm only.
What makes you assume the VRO is bad?

 

[bever]

Re: 89 Evinrude VRO Fuel Pump test

When cranking the engine it won't start. If I squeeze the bulb it will start and run.
If I unplug one of the fuel lines, fuel will squirt when squeezing the bulb.
On the engine side of the plug I get 12 volts + when cranking the engine.
So it's a impulse pump?

 

[bever]

Re: 89 Evinrude VRO Fuel Pump test

The diaphragm is bad. When sucking on the impulse nipple it won't hold a vacuum. When blowing in the nipple it wont hold pressure.
We'll be changing that sucka...
The wires are for the oil alarm. Once again working without a manual. One day I'll learn.

 

[boobie]

Re: 89 Evinrude VRO Fuel Pump test

You can buy kits to repair the fuel side of it. Try Maxrules.com

 

[ajrodriguezt]

Re: 89 Evinrude VRO Fuel Pump test

hi, i have the same problem but i have a 4 wire pump.
WernerF did you said the fuel pump do not use electricity to work.
A guy is selling me a fuel pump that he affirms works with my 1990 Evinrude 150 HP but it does not have wires.
May i used this fuel pump in my motor?

 

[ajrodriguezt]

Re: 89 Evinrude VRO Fuel Pump test

This is the standard vacuum fuel pump i told you in private message

BR

 

[ajrodriguezt]

Re: 89 Evinrude VRO Fuel Pump test

This is another fuel pump, it looks that have 3 fittings.
Take a look of it and give me your comments
BR

 

[ajrodriguezt]

Re: 89 Evinrude VRO Fuel Pump test

ups, the photos...........