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Need help taking off the oil injection tank on a 2000 50 hp Johnson motor

5

50hp

New member
Would like help on how to convert a oil injection system to just mixing oil in the gas, I have a 2000 Pontoon boat with a 50 hp Johnson motor, that has a separate oil tank that mixes the oil with the fuel at the engine, can I disconnect the oil tank and just mix the oil with the gas. If I can please help with how to do it.

Thanks:confused:
 
I am not sure you can just disconnect the tank. This motor has a special VRO pump that works off the crankcase pressure. I would be curious myself on how to do this as I have the same engine, but was told not to re-eingineer the engine by removing the VRO.
 
The VRO can be used as a " fuel only " pump.--------Plug the oil line at the VRO.----Unplug the wires to the pump ( alarm system for no oil ) and remove oil tank from boat.---Test overheat alarm in the control box.------Mix gas and oil in your fuel tank.
 
(VRO Changeover Judgement Call)
(J. Reeves)

The VROs first came out in 1984 and have been upgraded quite a few times. In my opinion, back around 1988, they had perfected them but I think that they were upgraded even more since then. As long as the warning system is operating as it should, I feel quite at ease with them.


Some boaters have voiced their thoughts such as "What if that overpriced plastic horn should fail while I'm under way for some reason, and the VRO decides to fail five minutes later?" Obviously that would result in a big problem which really brings their fears into view.


The word "ease" is the key word though. If one has the slightest feeling of being ill at ease with that setup, then they should take the route they feel more at ease with. A judgement call each individual would need to make on their own.

Thousands of parts in my remaining stock. Not able to list them all. Let me know what you need and I'll look it up for you. Visit my eBay auction at:

http://shop.ebay.com/Joe_OMC32/m.html?_dmd=1&_ipg=50&_sop=12&_rdc=1
********************
(VRO Pump Conversion To Straight Fuel Pump)
(J. Reeves)

You can convert the VRO pump into a straight fuel pump, eliminating the oil tank and VRO pump warning system, but retain the overheat warning setup (and fuel restriction warning if so equipped) by doing the following:

1 - Cut and plug the oil line at the engine so that the oil side of the VRO pump will not draw air into its system. Trace the wires from the back of the VRO to its rubber plug (electrical plug) and disconnect it.

2 - Trace the two wires from the oil tank to the engine, disconnect those two wires, then remove them and the oil tank.

3 - Mix the 50/1 oil in the proper amount with whatever quantity fuel you have. Disconnect the fuel line at the engine. Pump the fuel primer bulb until fuel exits that hose with the tint of whatever oil you used. Reconnect the fuel hose.

That's it. If you want to test the heat warning system to ease your mind, have the key in the on position, then ground out the tan heat sensor wire that you'll find protruding from the cylinder head. The warning horn should sound off.

Thousands of parts in my remaining stock. Not able to list them all. Let me know what you need and I'll look it up for you. Visit my eBay auction at:

http://shop.ebay.com/Joe_OMC32/m.html?_dmd=1&_ipg=50&_sop=12&_rdc=1
 
joereeves said:
(VRO Changeover Judgement Call)
(J. Reeves)

The VROs first came out in 1984 and have been upgraded quite a few times. In my opinion, back around 1988, they had perfected them but I think that they were upgraded even more since then. As long as the warning system is operating as it should, I feel quite at ease with them.


Some boaters have voiced their thoughts such as "What if that overpriced plastic horn should fail while I'm under way for some reason, and the VRO decides to fail five minutes later?" Obviously that would result in a big problem which really brings their fears into view.


The word "ease" is the key word though. If one has the slightest feeling of being ill at ease with that setup, then they should take the route they feel more at ease with. A judgement call each individual would need to make on their own.

Thousands of parts in my remaining stock. Not able to list them all. Let me know what you need and I'll look it up for you. Visit my eBay auction at:

http://shop.ebay.com/Joe_OMC32/m.html?_dmd=1&_ipg=50&_sop=12&_rdc=1
********************
(VRO Pump Conversion To Straight Fuel Pump)
(J. Reeves)

You can convert the VRO pump into a straight fuel pump, eliminating the oil tank and VRO pump warning system, but retain the overheat warning setup (and fuel restriction warning if so equipped) by doing the following:

1 - Cut and plug the oil line at the engine so that the oil side of the VRO pump will not draw air into its system. Trace the wires from the back of the VRO to its rubber plug (electrical plug) and disconnect it.

2 - Trace the two wires from the oil tank to the engine, disconnect those two wires, then remove them and the oil tank.

3 - Mix the 50/1 oil in the proper amount with whatever quantity fuel you have. Disconnect the fuel line at the engine. Pump the fuel primer bulb until fuel exits that hose with the tint of whatever oil you used. Reconnect the fuel hose.

That's it. If you want to test the heat warning system to ease your mind, have the key in the on position, then ground out the tan heat sensor wire that you'll find protruding from the cylinder head. The warning horn should sound off.

Thousands of parts in my remaining stock. Not able to list them all. Let me know what you need and I'll look it up for you. Visit my eBay auction at:

http://shop.ebay.com/Joe_OMC32/m.html?_dmd=1&_ipg=50&_sop=12&_rdc=1
Click to expand...

Thank you for this information it seems easy enough I think I will give it a try. Also if it does not work out will be able to reinstall it.
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Thank you for this information it seems easy enough I think I will give it a try. Also if it does not work out will be able to reinstall it.
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I discovered the engine block on these motors are set up for a regular fuel pump. I happened to have an older 55 hp engine with the same basic block. The fuel pump on it mounts near the water jacket. There are three bolt holes there with the center one currently being plugged. I plugged my old VRO hole from the block and removed the center bolt from the 3 bolt pattern. That operates the fuel pump. I bolted on the older style fuel pump and it works just like the older models now. The engine block on these newer motors is basically the same as a late 70's early 80's block with a few minor exterior upgrades for cowling and such. What I am saying is you could buy a fuel pump from an older evinrude or johnson and it will mount right on your motor just like it was made for it. Just be sure to plug the old hole into the block that hooked up the VRO and operated it. My engine is a 1993 so it is possible your newer 2000 does not have these three bolt holes.
 
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