50HP evintude tiller fuel connector question

paqman21

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1991 motor I can not for the life of me figure out what the circled connection goes to. When I got the motor there was a piece fuel line on it with a plug in it. Any idea what this is for?
 

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racerone

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That was for the automatic oil injection.----It has likely been removed.----Mixing gas / oil at 50:1 in your tank ??
 

Diplomasta

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You shouldn't need to do anything with it. Most likely the VRO is already capped off. It's a common tragedy. The VRO is the most reliable mechanical oiling device ever made, and yet everyone refuses to trust it.
 

Faztbullet

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The VRO is the most reliable mechanical oiling device ever made, and yet everyone refuses to trust it.
Yea right....rates right up there with the Autoblend units reliability.
 

racerone

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Have never seen the book or manual that Diplomasta has been reading !!!!
 

airshot

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You shouldn't need to do anything with it. Most likely the VRO is already capped off. It's a common tragedy. The VRO is the most reliable mechanical oiling device ever made, and yet everyone refuses to trust it.
Owned two of them, neither worked right. My marine mechanics ( multiple) have never trusted them. Excessive warranty claims on the VRO system is one of the things that bankrupted OMC. All my marine folks recomend the Mercury oil injection system over the VRO.
 

JimS123

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Owned two of them, neither worked right. My marine mechanics ( multiple) have never trusted them. Excessive warranty claims on the VRO system is one of the things that bankrupted OMC. All my marine folks recomend the Mercury oil injection system over the VRO.
Maybe one of the "things", but the Ficht is what secured their demise.

My own personal experience is that the Selectric Shift was even worse. I realize that many will claim that was wonderful, but no mechanic in my area could ever fix one.
 

racerone

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So there were no mechanixs in your area.----Do you trust an 8 or 10 speed automatic transmission in a pick up truck ?
 

JimS123

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So there were no mechanixs in your area.----Do you trust an 8 or 10 speed automatic transmission in a pick up truck ?
I live in a major boating area. Back in the day I would guess 5 or 6 OMC dealers and 5 or 6 Mercury dealers. They all would work on a freaking electric shift, but it seemed like they still were a problem when the motor came back. I was personally not a mechanic, so I had to rely on the dealer.

Boats and autos are apples and kumquats. My first auto tranny was a 2 speed. Technology has come a long way.

Modern cars are extremely reliable. Computer tech, you know. Mechanics today are basically clueless. Plug it in and read the screen. It tells you what to do. I will never own a pickemup truck - I'm not a farmer or a construction worker. Regardless, the technology and computer diagnostics make me trust them.
 

saltchuckmatt

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I've had 3 vro outboards from omc. Never a problem. One needed rebuilding once but the alarm went off and no engine damage.

Big technological advancement when it was made and I think omc followed Yamaha on that.
 

JimS123

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I've had 3 vro outboards from omc. Never a problem. One needed rebuilding once but the alarm went off and no engine damage.

Big technological advancement when it was made and I think omc followed Yamaha on that.
Yamaha was not in the USA market. When OMC's patents expired, they came over here with a big splash. They may have made improvements to the OMC designs, I dunno, but they certainly claimed that in their advertising campaigns.

If you look at comparable models back in the day, once you took the hood off, a yami looked like an OMC copy.
 

rolmops

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The original fuel line connectors tend to start leaking and in order to solve that problem people sometimes completely bypassed the quick hookup by replacing it by what you see in the picture you sent
The early VRO was truly variable to the point where the oil injction would reach up to 1-100 and blew up a ton of engines OMC retreated from this and went to 1-50 only that made them work proper.but name vro stuck.
 
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saltchuckmatt

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The original fuel line connectors tend to start leaking and in order to solve that problem people sometimes completely bypassed the quick hookup by replacing it by what you see in the picture you sent
The early VRO was truly variable to the point where the oil injction would reach up to 1-100 and blew up a ton of engines OMC retreated from this and went to 1-50 only that made them work proper.but name vro stuck.
Omc never went back to the 50 to 1 mix. They used the vro until they went to fuel injection.

VRO was a good system.
 

jimmbo

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VRO got a bad Rap, mainly from Mechanics that didn't understand how it operated, so they would just call it junk. Myself, I have never seen one fail.
 

airshot

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VRO got a bad Rap, mainly from Mechanics that didn't understand how it operated, so they would just call it junk. Myself, I have never seen one fail.
Many years back a worked with a fellow that had one of the early versions, had numerous issues with it, the dealer called Johnson for warranty claim review, he showed me the letter from Johnson, they recomended the dealer bypass the vro system and run the motor on 50-1 premix from then on. Appears even the factory did not have faith in there own system. I owned two that did not work properly, in my own circle of boating friends, no one has had issues with the Mercury system so far. I was always an OMC fan, since the 50's, but the vro system was one of the issues that sent OMC into bankruptcy. I am sure there are those that have had good sucess with them, but in my area, they are not trusted by most.
 

racerone

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The VRO pump is quite good itself.----There are a number of issues.-----The early ones did not have a " no oil " warning.-----The early ones had an oil hose on the motor that started leaking air.------Rebuilt 2 or more motors myself because of that.----Saw the steel sleeve for oil piston loose in one.----If a motor sits for months on end the oil side must be primed / monitored to make sure it is working.-----It is said to be automatic , but an owner needs to check it once in a while.----And who does that today.----Hardly every see anybody checking oil on a car at the gas station these days.
 

Diplomasta

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Owned two of them, neither worked right. My marine mechanics ( multiple) have never trusted them. Excessive warranty claims on the VRO system is one of the things that bankrupted OMC. All my marine folks recomend the Mercury oil injection system over the VRO.
The mercury oil pump is run by a nylon gear. Why you trust that? Mercury has big money. They can get anyone to say whatever they want. Vro problems occur because people don't follow instructions. You must use the special hose clamps. And all hoses must be sealed perfectly for it to work. But yes, as far as a device that relies air puffs to mix oil and gas, the vro is still the best ever designed, to this day. Not my opinion. Just the stats.
But who needs to worry about that anymore? Everything is 4 stroke now, with 3 oil pumps and more parts than you can count. 😮‍💨 yay.
 
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