Evinrude Vro 150hp Manual
Ok My cut and paste is in full force. Below are instructions from a trusted source (DUNK) I would say that the blown vro/whatever is close to an urban myth. They just don't go bad that often. I have an 89 evinrude that has never had an issue. I might do it only because I would probably not pay to replace the pump on such an old engine, but it hardly keeps me up at night. I have also given you a link to an interesting article on the subject.
Worth a look. Instructions just disconnect the 3 wires off the top of the VRO. Follow these wires back from the VRO and you'll find plug connectors. Pull them apart and tape or tie wrap out of the way of the flywheel. The back side of the VRO is the oil side and you'll see a hose running to hose barb on the lower side of the pump. Pull it off and cap that fitting.
You can get rubber caps at a auto store. Pull the oil tank and oil line out of the boat and disconnect the alarm wire from the tank. Mix 50 to 1 in the main tank. It won't hurt it(the VRO) to run it this way and if you ever sell it the next owner can just rehook everything up and use the VRO. Ok My cut and paste is in full force. Below are instructions from a trusted source (DUNK) I would say that the blown vro/whatever is close to an urban myth. They just don't go bad that often.
I have an 89 evinrude that has never had an issue. I might do it only because I would probably not pay to replace the pump on such an old engine, but it hardly keeps me up at night. I have also given you a link to an interesting article on the subject.
Worth a look. Instructions just disconnect the 3 wires off the top of the VRO. Follow these wires back from the VRO and you'll find plug connectors. Pull them apart and tape or tie wrap out of the way of the flywheel. The back side of the VRO is the oil side and you'll see a hose running to hose barb on the lower side of the pump. Pull it off and cap that fitting.
You can get rubber caps at a auto store. Pull the oil tank and oil line out of the boat and disconnect the alarm wire from the tank. Mix 50 to 1 in the main tank. It won't hurt it(the VRO) to run it this way and if you ever sell it the next owner can just rehook everything up and use the VRO. Oh, its a catastrophic failure no doubt, and that alone could be reason enough to do it, My point is that they do not fail as often as some folks would have you believe. If you do it, I would advice removing the tank entirely, in the event someone treats you to a tank of gas someday, and does not know the score.
We have left my father a little note on the gas cap of his whaler, but I fear it is only a matter of time. The who owned the boat before him used to premix AND fill the oil tank.
Real belt and suspendors kinda guy. Talk about babying an engine!!!
Mattaponi asked. Is there a simple way to disconnect the VRO on a 2001 Johnson 90 Ocean Pro? Do you recommend it or not?
I owned a 2000 Johnson 90 Ocean Pro, and it had oil injection, but it was not VRO. I don't remember the year that VRO was discontinued by Johnson/Evinrude, but your motor (if it is a 2001 model) doesn't have it. You have a much improved oiling system. Don't disconnect it. The newer oiling systems are bullet-proof - at least mine was.
That 90 Ocean Pro is a great motor. Your motor should look like this one.
I wouldn't do it on an engine that new. The VRO's bad reputation is mostly a throw back to the first several years it was available.
There were rubber pieces that did not stand up to oil. Actually, OMS is not the replacement of VRO. OMS refers to a portion of the original oiling system that is still being used.
It was also used in conjunction with VRO as well. I disconnected the VRO on my '94 60hp Evinrude at the end of last year. Now it seems to idle too fast and I think it is because it is running too lean. I should've known better. Adding more oil to pre-mix leans out the air/fuel mixture. There's only so much fuel that can pass through the carb jets.
When some of that fuel is replaced with oil (as is the case in going from oil injected to pre-mix) or more oil, there is now less fuel passing throught the jets. Which means makes for a leaner air/fuel ratio. Ive got a 85' evinrude with VRO. The fuel side of the pump craped out at the pier last winter and I was faced with the dicision whether or not to put a new VRO pump on or just a standard fuel pump and premix my gas.
After several days of research and talking to people I decide to go with a new VRO unit (not cheap.around $300). The man at the shop says the newer VRO's are very rugged and dependable, if they were to fail, it would be in an 'over oil' situation. I'd stick with it and enjoy your days on the water. Trailer Boats Magazine. February, 2000 issue. Article Titled 'Bad Rap'. 'Own an Evinrude or Johnson with variable ratio oiling (VRO)?
Evinrude Vro Pump
Here is the real story and some easy fixes for this much-maligned system' Here are some excerpts from the article: '. VRO introduced in 1984. Gasoline reformulation in those early years contained alcohol and solvents that softened the internal rubber components, causing pump failure. OMC improved the pumps considerably with the VRO2, introduced in 1986. But the damage was done. VRO became the scapegoat for many OMC engine malfunctions. Actually the much-maligned pump is simple and reliable.
From 1986 until 2003, it was produced with only a few changes. They are now sometimes referred to as the 'old Panda'. 2015 fiat 500 owners manual. The second generation was launched in 2003 and was successful winning the European car of the year (2004).
There is no mechanical maintenance to be performed on the pump itself, but the VRO/OMS (oil metering system) should be inspected occaisionally for cracked lines and broken clamps. One of the most common causes of engine failure is water in the remote oil tank. Condensation and spray can build up over time and like water in a fuel tank, it stays in the bottom to be sucked up at the worst possible moment.
Use a turkey baster to draw some fluid from the base of the tank and squirt it into a clean jar. If you see any signs of contamination, the tank should be flushed clean, the filter (part No. 174377 from your OMC dealer) changed, and oil line purged. Be sure to read and understand the service manual before performing any of these procedures. You should replace the clear plastic cap with the later model's solid black filler cap (part No. 176217) that provides better water intrusion resistance. The oil line should me OMC's 1/4 inch I.D.
150 Hp Evinrude
'rubber' hose (part No. 333485) without any splices. Early systems had smooth vinyl oil line that hardened after a few years and sometimes caused air leaks. A one piece oil line eliminates air leaks, which can trigger 'no oil' alarms. Avoid plastic tie-wraps or worm-gear hose clamps on this system. OMC's rachet clamps (part No. 339277) give the best seal and full 360-degree clamping action.
Keeping everything airtight can't be stressed enough. If your engine was built before 1993, make sure it has the blue pulse limiter to protect the air motor and check valves in the pump. A new VRO/OMS pump can be used to upgrade all the previous years and model outboards.
The new 438400 Series contains variious fittings for different outboards. Contrary to boat ramp banter, the VRO/OMS is a simple and reliable oiling system. Most of the misinformation about it's reliability originates form those who either do not understand how the system works, or fail to maintain it.'
Evinrude Vro Outboard Motors
Outboard boat motor troubleshooting and testing procedures DIY inboard outboard boat motor parts & accessories Johnson Evinrude Mercury Mariner Force Chrysler Yamaha Mercruiser OMC Cobra Parts Depts. Resources The following is supplied by BPS as a brief reference guide only. BPS assumes no liability for loss, damages, or incorrect diagnoses resulting from usage of this information. There is a golden rule to any gasoline powered motor whether 2 stroke or 4 stroke. Compression, fire, and fuel, are the three required elements for a motor to run. If any of the three are lacking, you will obviously experience a problem.
This page is designed to help you with the main topics where common problems occur. The Fuel system on an outboard, being a breed of its own, can confuse the average person during diagnosis.
For example: an anticipated fuel problem, can sometimes actually be ignition related, or even compression related. This is why it is always a good idea to check the simple things first. If fire is good to ALL cylinders, and compression is within range showing no more than 15 lbs. Difference from cylinder to cylinder, then the problem would most likely be fuel related. Either stopped up carbs, weak or bad fuel pump, low or no compression on cylinder supplying pulse to fuel pump, a bad squeeze bulb, tank not venting, stuck anti-syphon valve on tank, loose fuel line connections, etc., could all be causing a problem you may be encountering.
Upon diagnosis, just remember to check all three required elements before you simply start replacing parts by trial and error. We receive many inquires on how to test the Johnson/Evinrude VRO oil injection system. Below are two methods to troubleshoot problems with them. I have an oil injected motor and I hear the warning horn, but I dont know if it has to do with oil injection or overheating. How do I know which sound is what? An intermittant ' beep.beep.beep' sound has to do with oil injection. A steady continuous ' beeeeeeeeeeeeeeeeeep' has to do with overheating.
Oil injection on all outboards produces an intermittant beep when there is either a problem with your motor not getting oil, oil tank level sensor is bad, or your oil level in the tank is low. When the oil tank is low, you have roughly 30 to 45 minutes running time before being empty. Regardless, when you hear the intermittant ' beep.beep.beep' sound, always make sure you know the answer (low oil or no oil) before continuing to operate motor further. If you dont understand the oil warning, your motor is doomed from continued operation if the oil injection system has failed. My motor doesn't have oil injection, do you have a way that I can troubleshoot problems in that situation? Sure.check these links: (Carb section coming soon!).