Vro

gametrail

Cadet
Joined
Mar 14, 2009
Messages
13
I posted this in 09. I went to the premix and it worked great.:) What I wanted to know is now I took the tank out and unhooked the wires. Will this cause me any problem?:confused: Also how in the world you shut this ### horn off?:mad: Thanks for yor time. Gametrail
 

Joe Reeves

Supreme Mariner
Joined
Feb 24, 2002
Messages
13,262
Re: Vro

(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.
 

gametrail

Cadet
Joined
Mar 14, 2009
Messages
13
Re: Vro

OK Thanks alot. I have ran it premixed since 09 I was worried about takeing the tank out. I didnt know if unpluging the wires would hurt anything. The horn sounds maybe 4 or 5 min. after I start it. Is that the oil warning?
 

Joe Reeves

Supreme Mariner
Joined
Feb 24, 2002
Messages
13,262
Re: Vro

(VRO Horn Warnings)
(J. Reeves)

NOTE: I retired around 1991/92. Possibly some of the later V4 engines and others may also incorporate a fuel vacuum switch that would enable a fuel restriction warning to sound as mentioned below, an unknown factor to myself.

1 - A steady constant beep = Overheating - The V/6 engines, possibly some others, have a fuel restriction warning which is also a steady constant beep.

2 - A beep every 20 or 40 seconds = oil level has dropped to 1/4 tank. (Late model engine = Every 40 seconds)

3 - A beep every other second = VRO failure, air leak in oil line, oil restriction, (anything that would result in a lack of oil being supplied to the engine).

NOTE - If the warning horn is the black plastic (overpriced) three wire type horn, the warning horn should beep once when the ignition key is turned to the ON position. If it does not, it is either faulty or someone has disconnected it (a stupid move!). At any rate, if it does not beep which indicates that the horn is non functional, find out why and do not run the engine until the problem is corrected.
 

Grassi25

Seaman Apprentice
Joined
Mar 9, 2011
Messages
44
Re: Vro

I recently disconnected my vro in the same way described above. I have a 96 200 johnson, I ran it in the river for the first time and got about two miles and it slowly died down and shut off. It would crank back up then shut off.

My question is aobut the fuel restriciton buzzer. My alarm beeps when I turn the key on, but in the 7 years I have had the boat I don't ever recall the buzzer going off. I pulled the hose of the top of my fuel pump and turned the motor over fuel pumped through, but it seems like it was a little weak. When I fast idle it I get some popping in the carbs. Which we have been thinking was weak fuel. But if I have a low fuel buzzer shouildn't I hear it. I have tried pumping the ball while its idling with the fuel cap open and it doesn't seem to make a diff.

I just had a no good boat mechanic put this thing back together and trying to figue out his mess. So, it could be any number of things.
 

Jayrock

Petty Officer 2nd Class
Joined
Dec 19, 2008
Messages
132
Re: Vro

I recently disconnected my vro in the same way described above. I have a 96 200 johnson, I ran it in the river for the first time and got about two miles and it slowly died down and shut off. It would crank back up then shut off.

My question is aobut the fuel restriciton buzzer. My alarm beeps when I turn the key on, but in the 7 years I have had the boat I don't ever recall the buzzer going off. I pulled the hose of the top of my fuel pump and turned the motor over fuel pumped through, but it seems like it was a little weak. When I fast idle it I get some popping in the carbs. Which we have been thinking was weak fuel. But if I have a low fuel buzzer shouildn't I hear it. I have tried pumping the ball while its idling with the fuel cap open and it doesn't seem to make a diff.

I just had a no good boat mechanic put this thing back together and trying to figue out his mess. So, it could be any number of things.

Please start a new thread with your question. Hijacking is bad joojoo
 

maui al

Cadet
Joined
Dec 5, 2010
Messages
25
Re: Vro

make sure you keep those loose ends out of the bottom of the cowling to eliminate any possibility of shorting. I made the conversion two years ago and now have some problems with it going in slow mode and I found these two sets of wires were corroded and may have grounded or shorted out something when salt water got into the cowling and did not drain out fast enough. If you are never going to convert back then I suggest you cut these wire back far enough to keep them out of harns way and also waterproof the ends or cuts. Less wiring, less mess to fuss with in future repairs.
 
Top