How to bypass vro oil pump johnson outboard 150 hp

boobie

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Check the top secret files at the beginning of this forum. Good explanation.
 

sfmaster

Seaman
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Jun 8, 2008
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Ondarvr, I want to be able and mix the oil to the gas manually. I want to eliminate the oil tank and buzzing noise when low oil. I don't want the headache of thinking that one day the system might not work nd my engine getting messed up. I rather fill up gas and add the ration of oil on my own directly in to the gas tank.
 

ondarvr

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I understand the feeling, but understand that they are very reliably and more people mess up the premix than have modern oilers fail.
 

sfmaster

Seaman
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Okay. I just had a buddy of mines get his motor messed up due to a faulty VRO. His engine stopped getting oil and he ended up being towed in by seatow.
 
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ondarvr

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The vast majority of "failed oilers" have nothing to do with the oiler, it typically was caused by something else. The one cylinder seized scenario is typical, the oiler just supplies the oil, it goes to all cylinders equally, if just one fails its normally due to something else.
 

kodibass

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All you need to do to by-pass the oiler is cut the hose that feeds the oil to the fuel/oil pump plug it with a small bolt and a hose clamp.
 

Chris1956

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sfmaster, Your motor has a very good oil injection system, It is very reliable, and tells you when it breaks. It should have a "No Oil" alarm as well as the low oil alarm. If the "NO Oil" alarm sounds, immediately pour TCW-III oil into the gas tank and shake the boat side to side. I have a 63G tank, so I carry 1 G of TCW-III, in case that happens. Those motors mix at about 60::1, so I will have enough even if the tank is full.

Also, since it should take at least 50 gal of gasoline to cause the low oil alarm to sound, why not fill the reservoir with oil, everytime you fill up with gas? That pesky alarm will then never sound.
 

sfmaster

Seaman
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Jun 8, 2008
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True Chris, I'm going to take your advice. You have a point. If it ever breaks down (VRO) then I'll consider eliminating rather than fixing it.

Thanks :)
 

boobie

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Go to the top secret file at the very beginning of this forum. Click on it and then look for VRO conversion in it. Tells how to disconnect and use premix. If it was me, I'd still disconnect it. JMO.
 

sfmaster

Seaman
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Jun 8, 2008
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Thanks to All for the good advice. I'm going with leaving the system as is. If it breaks down, wish I hope it doesn't , I will then consider eliminating it. Thank you all for the help & Support.
 

Fed

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Apr 1, 2010
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Testing the function of the low oil & no oil alarms will give you peace of mind.
 

sfmaster

Seaman
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Jun 8, 2008
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Let me ask another question not Oil related. My previous boat had a engine level gauge. On this Johnson the mechanical system level on the motor (by the tilt& trim) but no gauge. Is it easy to install one?
 

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Chris1956

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I would think your wiring harness has the three wires for the engine trim gauge. White/tan looks to be the color of the trim gauge sender.

IMO, trim gauges are nearly useless. You want to trim by feel. Also, the gauges do not seem to be consistent in their readings. I would recommend a water pressure gauge instead. It will monitor the pressure of the cooling water and can alert you when the impeller is failing. Much more useful...
 

Chris1956

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My '98 Johnny 150HPV6 had a plug on the waterjacket on one of the heads. The pressure gauge nipple screwed right in. Run the plastic tube to the gauge in the dash, and connect up the lighting wires.
 
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