1990 VRO 40 hp

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  • This topic has 8 replies, 6 voices, and was last updated 9 years ago by hugh.
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  • March 30, 2016 at 12:38 am #3939
    billy-t
    Participant

      Hi Fellows

      Looking at a 1990 40 Evinrude. so it has a fuel injection system. but will it still work if you premix your fuel or are you bound to the injections system?

      Any other issues with these units?

      Thanks

      March 30, 2016 at 1:07 am #34074
      jerry-ahrens
      Participant

        US Member

        Yes it does have an oil injection system, [VRO] but you can disable that feature and start pre mixing your fuel at 50/1. Those VRO units are not as bad as people make them out to be, and are pretty reliable, as long as the tank and pickup screen are clean and the vacume [oil] line to the tank does not have any leaks.
        I forgot to mention that if you disable the oil injection side of the VRO, it can still be utilized as just the fuel pump.

        March 30, 2016 at 1:58 am #34076
        hugh
        Participant

          I removed the VRO system pump and all for a friend. On his I was able to install a stock pump in place of the other unit. You could use an after market pump also { Briggs or Kohler $30 } His has been running for 2 seasons now on premix.

          March 30, 2016 at 2:18 am #34080
          billy-t
          Participant

            Thanks Fellows

            Is it pretty straight forward to disconnect the oil injection system?

            March 30, 2016 at 2:22 am #34081
            gearhead4
            Participant

              Yes it is. Just unplug the oil line where the clear plastic "Sight glass" is which is just before the oil side of the pump and plug that port then route your pre-mix into the fuel side of the pump and you’ll be all set. If your controls alarm or give any issues then find the harness that connects the VRO pump to the main wire harness under the hood and disconnect it, then wa-la, go run your boat with pre-mix and enjoy with the Corona in hand fishing!

              gearhead4

              March 30, 2016 at 12:19 pm #34097
              fleetwin
              Participant

                US Member
                quote gearhead4:

                Yes it is. Just unplug the oil line where the clear plastic “Sight glass” is which is just before the oil side of the pump and plug that port then route your pre-mix into the fuel side of the pump and you’ll be all set. If your controls alarm or give any issues then find the harness that connects the VRO pump to the main wire harness under the hood and disconnect it, then wa-la, go run your boat with pre-mix and enjoy with the Corona in hand fishing!

                gearhead4

                Exactly! That is the beauty of this system, easy to disable. No need to remove the VRO pump and replace it with conventional fuel pump, it works fine as just a fuel pump. And yes, your engine does have the no oil alarm, follow the harness back to the plug connector and simply unplug it. The low oil alarm leads for the oil tank will have to be disconnected also when you remove the tank…
                The one thing I like to stress is that your engine cover calls out VRO injection so be very careful when refueling. It would be an understandle, yet fatal error if someone/dock boy just added straight fuel to your tank "assuming" the engine is oil injected….

                March 31, 2016 at 10:30 am #34145
                jerry-ahrens
                Participant

                  US Member

                  The bad part about those is the price.. I checked the current price on a new VRO unit the other day, and they are right at $550.00 BRP is steadily raising their parts prices. You have to call the dealer to get the most current pricing. I sure hope they continue to offer parts for the millions of older engines still in service… as the aftermarket stuff is much less attractive, at least to me anyway.[/size]

                  April 1, 2016 at 12:50 am #34165
                  george-cantabene
                  Participant

                    I have a 1987 Johnson 48 SPL. Bought it new. Best motor that I have ever owned. It is a 50 w/o VRO. Has hundreds of hours of use. The later two cylinder loopers are hard to beat. I always run it at 40:1. I can supply pics of the fuel setup if you want.

                    April 1, 2016 at 12:55 am #34166
                    hugh
                    Participant

                      The price of those pumps was the reason I removed it all and went with a standard pump. I didn’t want him to have to deal with a bad expensive pump down the road. As you say, they work find with the oil part disconnected though. If I remember right, there was still a place on the block to mount the old style standard pump. It’s been a few years though, so….. :mrgreen:

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