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Is My VRO Bad?

J

Jhout0729

New member
Hi everyone,
I am new here and trying to get some answers.

I have a 1998 Evinrude intruder 150. All 6 cylinders have good compression and the engine runs well, that is until the primer ball is empty. I pump the ball, and it gets firm, I start the engine, and it and its runs great until the ball is empty. If I start the engine and continue to pump the ball, it continues to run and within a few minutes, the low oil light comes on. That's when I get scared an turn it off. I can go back to it 20 min later, pump the ball and it starts fine with no oil light. what should I do?
 
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Jhout0729 said:
If I start the engine and continue to pump the ball, it continues to run and within a few minutes, the low oil light comes on. That's when I get scared an turn it off. I can go back to it 20 min later, pump the ball and it starts fine with no oil light. what should I do?
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From what you've said, you're indicating that that the engine is running on all six(6) cylinders... are you sure?

It sounds like your VRO has quit functioning completely. Pumping a the fuel primer bulb constantly has you acting as a manual fuel (gasoline) pump... BUT... the VRO still IS NOT pumping oil, hence the low oil light... you should also be getting a sounding from your warning horn.

Bottom line there is either:

1 - No pressure being fed to the VRO via the downward motion of the related piston... in which case possibly the hose leading from the VRO to the crankcase has broke (would make a hellava noise when the engine's running).

2 - The piston that operates the VRO is blown, in which case, the compression would be lousy which you state is not the case.

3 - A reed plate (leaf valve) that is related to the piston mentioned above has failed which would let the needed operational pressure to be blow out the related carburetor.

4 - The VRO has failed on both diaphragm functions, gas & oil.
 
All 6 cylinders are working and yes I do get the alarm, so its seems option 4 would be most likely? Is there a way to bypass the vro on this engine?
 
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Some will argue.---------I consider the VRO to be easy to take apart for inspection.----------Do that before you spend money on a new one.
 
That is NOT what I am saying.--------I am not there to evaluate the condition of your VRO pump / your motor / your fuel system.----------All I suggest is inspection and trouble shooting on your part !
 
They do not sell rebuild kits for the vro. You can rebuild the gas part of the pump. they no longer sell a kit for the oil side. I have been doing the research on this very question this week. Yes you can add oil to the tank to bypass the pump. There is plenty of info on how to block off those hoses etc. good luck
 
Realfunone said:
They do not sell rebuild kits for the vro. You can rebuild the gas part of the pump. they no longer sell a kit for the oil side. I have been doing the research on this very question this week. Yes you can add oil to the tank to bypass the pump. There is plenty of info on how to block off those hoses etc. good luck
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If I bypass the VRO, What oil ratio should I use?
 
You would run with 50:1-----------------------If you look around you may be able to find repair kits.--------------I stated that the VRO is easy to take apart, they are not mysterious at all.----Not sure why you would not do that.
 
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