I agree with Chris and seahorse5. The fuel pump, which is located in the middle chamber of the VRO, consists of a push-pull piston (orange) and diaphragm with a flapper valve and an inlet check valve. Somewhere I saw two charts that gave testing procedures for the pump itself (now I cant find them again). The price was unbelievable.” Clyde B. cause engine failure. Start and run the engine in forward gear, at idle, until normal operating temperature is reached. Went through a gallon in 20 miles. The manufacturer’s recommendations should be followed. Not directly replacement. “In right-sided heart failure, the right ventricle of the heart is too weak to pump enough blood to the lungs. 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. Two 90 degree molded hose pieces are installed with the new (blue faced) anti-backfire valve between then, then the other end fastened to the pulse fitting on the pump. It works great now! they still smoked on start and ran fine. VRO pump was replaced 2 or 3 years ago and I dont want to fault again. new tests prove engines can run with no oil at idle and when run without oil at high speed engine stops siezes cools down and can be restarted with minor damage providing 50 to 1 oil is put in at this time. Shut the motor down. You also have a fuel (lift) pump that feeds the VRO unit which has a screen and diaphram in it. Certified Marine Technician. Paint the correct oil/petrol ratio on the fuel tank and use only the recommended two-stroke outboard motor oil. … Make sure your fuel supply tank and hose is not sucking air or leaking. the failure shows up as a greatly reduced rate of fuel flow, often to the extent that the engine quits due to lack of fuel. Used on all motors except 2-cylinder 40-50 HP models. My mechanic thought it might be a bad pump, but he's not an approved BRP dealer. My VRO fuel pump quit working at the end of last fall. I didn't want to waste money trying to repair it with a kit so I bought a whole new pump from Crowley. $19.79 Outboard Fuel Pump … I HAVE A PROBLEM WITH WITH THE STOCK VRO PUMP I FOUND THAT I HAD LOW COMPRESSION IN ONE CYLINDER I INSTALLED NEW RINGS ALL OF THE CYLINDERS. This will keep the no-oil warning horn from sounding all the time. We have used them a couple or three times. Topic: New BRP OMS Pump Failure: Dan: posted 05-17-2007 12:12 PM ET (US) My [OMS--also often called VRO] pump was acting funny. looking at the vro it is a very simple pump. Ask Your Own Boat Question. Replaces the following previous VRO pump part numbers: 0175109, 0435560, 0435784, 5004558, 0435558, 0435556, 0435953, 0438400. Indicative of a fuel pump failure, right? hello with the many different vro pump problems through the years I did the same. It's different with OEM part. Carbhub 5007420 VRO Fuel Pump for Johnson Evinrude VRO Oil Injection Conversion Fuel Pump Kit 5007420 5007422 90hp-250hp Loopers v4 v6, Replaces 5007420, 5007422, 4-7359, 1399-07359. Plug off the oil line or remove the oil tank completely. MerCruiser Certified Technician. Items you will need. This usually results in failure of the old VRO pump, due to lack of lubrication for the shuttle pins inside the oil side of the pump. One of the most common causes of engine failure is water in the remote oil tank. Instead of pre-mixing my fuel all the time I would like to know if this model engine has a premixer available for them. Should have bought this VRO replacement kit before. Even if pumping the fuel bulb solid. I pulled mine out today and it flows easily in both directions. 06-16-2012, 08:03 AM. A fuel pump rebuild kit is needed every so often with outboard motors. That was one thing that made the old one bad. The fuel pumps on most modern vehicles are electric and mounted in the fuel tank. racerone. Pliers. I have to continue to pump the bulb in order for the engine to remain running. There are cases where your pump diaphram will tear. However -- on the 9.9/15 hp motors from 1987 to 1992 depending on whether it came equipped from the factory with a electric starter or not, there was a different fuel pump. You have an approved option to replacing the pump. 155 hp using non VRO. When the key is turned on, the fuel pump is activated and pressurized, which can be heard as a quiet whine or hum in some cars. 2) Replace the fuel side components of the VRO (if anyone sells them), or 3) scrap the entire VRO pump and convert to a conventional fuel pump (if one exists for my engine)? Docksidemarineservices. Please be sure to compare carefully … Good customer service with Sophie to get a replacement diaphragm. Interesting read - That said, I have trouble shooted everything BUT the VRO … If you take off the cover and look at the VRO pump, the old VRO pump has 3 wires coming from it, tan , black and grey, and the newer VRO 2 has a 4th wire that is purple. The inner rubber diaphragm can develop cracks or pin holes that effect proper fuel flow, and inner check valves and springs can break causing complete pump failure. Please confirm that you can use this modified pump before VRO Pump for Johnson and Evinrude Function - VRO pump Meet and extend automotive performance. but later found very few true oil failure problems that totaled engines. but i dissconnected and mixed anyway. If you run long enough with improper fuel pressure and lubrication the powerhead can be damaged. I just had my mechanic put in the new pump last month, so I was really surprised when it developed problems. I know its a bit older then modern 2-strokes where premixers are built in, but would just like to know where I can get one (Australia) & if its not too much trouble to set up adjacent to the motor. Johnson 110hp vro 1987 I just bought this motor, its vro. It will give you too much oil. Re: VRO pump failure On an older crossflow block like yours, you have to remove the fitting in the block and replace it with a regular brass nipple. I recomend replacing your VRO pum by this well built and reliable kit. Inspect the fuel filters to ensure they are clean and serviceable. 4.5 out of 5 stars 366. There is No solenoid valve. Tan. That purple wire goes to the alarm. “We used All-Rite Water to replace a small part in the well when we had a pump failure. Replace for OMC part #4-7359. OK. what are my options to fix it. recall only one instance where a VRO pump caused an engine failure because we've always been able to detect and repair the real problem. If you can squeeze the heck out of the oil tank primer bulb, and it seems to let oil move- theres your problem. The VRO 2 also had a tag saying it was, but it could be missing. I'm doing the research but it seems to me that it's more of a 'fail safe ' thing than a proven fact. It is located down stream from the plastic filter bowl (disposable) inside the engine housing on the port side of the engine. I have a Johnson 70 HP 1989 2 stroke that I use premixed fuel in at 50:1. Although new, I had to disassemble the VRO and found the oil side diaphragm was severely torn allowing oil to freely pass. installing the earlier type of fuel pump, restores full function, though you have to mix gas/oil at a 50:1 ratio. 06-16-2012, 09:00 AM. Disconnect the electrical harness plug that comes off the VRO pump. If it's not a fuel restriction or leak, then it could be a VRO issue. Fuel pressure should be minimum 3 psi at low speeds and over 10 psi at high speeds. Re: VRO Pump 92 Evinrude yeah, I did read that, actually, I found that posted somewhere here this morning. It would fail, and with no alarm, you didn't know until it was too late. I can only speak very highly of them. had a pair of johnny 200 vro's. The new pump came with instructions and all the necessary accessories. Mix your fuel at 50:1, 40:1 if you do a lot of wide open boating. 1 4 5. If you are trying to eliminate the oil side, because of unreliabilty or failure, simply disconnect the oil line and plug it, and disconnect the oil warning sensor. The VRO pump is a mixer powered by crank case pressure pulses. Disconnect the oil line at the engine and cap off the fitting and the hose end. If the pump is not working properly, change out the pump -- then go boating. A rod connects the fuel pump piston (orange) directly to the air motor piston (dark green) and the two chambers are sealed from each other by an o-ring. VRO pump is clicking like crazy at idle (3-5X per second). The VRO pump is actually 2 pumps combined, fuel and oil. More Info Vro pump came, I installed, but it pumped too much oil. $59.98 438559 Karbay Fuel Pump 385784 433390 438559 for Johnson Evinrude 25 35 50 65 70 75 85 88 90 100 105 115 125 135 140 HP. If all the clamps are tight and the fuel lines are good the pump will work perfectly. 11,409 satisfied customers. Remove the fuel tank cap and clear the fuel tank vent. 1990 140 hp Evinrude. Too many dealers (OMC and Merc alike) are far too quick to blame something they don't understand. This causes blood to build up in the veins (the blood vessels that carry blood from the organs and tissue back to the heart). I REPLACED THE LOWER C … read more. A new VRO pump is now over $300. 1) replace the entire VRO pump (way expensive). VRO Pump Part Number- Replace for Johnson/Evinrude #'s 5007420, 5007422. It wasn't a low oil problem, but a low fuel problem. I'm in the middle of a rebuilding my engine that failed due to overheating , not oil pump failure. Low-pressure fuel pressure test gauge. Also, there was info about the pulse vavle, including an updated color band (blue I think). The required amount of oil per litre of petrol varies between 1:100 and 2:100. Fuel Pump Rebuild Kit for Johnson Evinrude Outboard. Also need to pump the bulb after the engine sits off after a drift. The VRO pump over oiling is due to air entering the fuel system causing the pump to pulse more than it should. 3 stars due to product failure on arrival. The increased pressure inside the veins can push fluid out of the veins into surrounding tissue. Customer service, Sophie, is sending a rebuild kit so I can replace the torn diaphragm. The VRO pump assembly itself is well built and a reliable fuel pump ( oil side disconnected ) and repair kits are available. Runs above idle fine. Pre-mix the gas and oil in your tank at a 50:1 ratio. Have these troubles been caused BY the VRO pump itself, or have it been outside/other factors that have given the VRO problems in operating as intended? Johnson 110hp vro 1987 I just bought this motor, it's vro … as long as hoses are good it's is as reliable as the rest of the engine. 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. 4-wire replacement VRO pump for Johnson and Evinrude models. 3.5 out of 5 stars 48. This is bolted to the crank case and is also powered by crank case pressure pulse power. Pumping mucho oil. ran fine, smoke on start. If the vro (fuel oil pump assembly) is clicking rapidly it is probably bad and not making proper fuel pressure. PUMP FUEL ONLY. Last year bought a repair kit for my VRO pump, with no sucess as the engine sucked to much oil and got all dirty and stuffed witho oil, This a a very simple and reliable sollution . The fuel pump is responsible for delivering fuel from the gas tank to the engine at the appropriate pressure required for performance demands. Yeah, I do have to mix the oil and the gas but the peace of mind of not worrying about VRO pump failure is well worth the added bit of adding oil. If it had only a rope starter, then it was equipped with the older small square fuel pump, but if it had a electric starter then this newer larger fuel pump was installed. When I bought my rebuilt 1989 155 Johnson from Joe at Barnacle Bills, he gave me the option of going with a regular fuel pump or the VRO, I opted for the the regular pump and have not regretted it. They replaced it very efficiently, very quickly and at a good price. The VRO can be eliminated by disconnecting the oil line from the pump and unplugging the pump. The installation was quick and easy. I took it apart to look for the problem but everything looked fine. Re: VRO adjustment?

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