VRO pump replacement

[wippb]

I have seen several threads about VRO pump problems. Being that my engine (1990 60HP Evinrude)is now 12 years old and I bought it used I am considering switching to premix. My Dad has a 70 HP Yammy that had to have the powerhead replaced because of oil pump problems (ouch). I was told that I can put a conventional three port fuel pump on it but when I contacted my local dealer he didn't know what I was talking about and gave me the number for a VRO/fuel pump kit (438406). Is the three port fuel pump a viable solution and if so what is the part number. Do I need to do any other mods to make this change.<br />Thanks

 

[JB]

Re: VRO pump replacement

Ahoy, Wipper.<br /><br />You don't have to replace the VRO pump to switch to premix. I assume that what you are calling a 3 port pump is the pump for premix used on earlier (pre-VRO) engines.<br /><br />Disconnect and plug the oil inlet to the pump. Then disconnect whatever sensors are associated with the VRO (it differs from year to year). Then you should be okay.<br /><br />Red sky at night. . .<br />JB

 

[wippb]

Re: VRO pump replacement

Thanks J.B.<br />I have seen the other threads that relate to just what you suggest but when I was told about this three line fuel pump it kinda threw me off a bit.

 

[Mike M2]

Re: VRO pump replacement

On the side of the pump will be 2 wires with bullet connectors. You can just unplug them to disconnect your warning buzzer, any other way will make it not work for overheat. Then just disconnect and plug oil inlet like JB said. Thats all thats to it. I have removed the pump and replaced with old style(pre VRO) pumps. A pump from mid 70's will work from about the same engine size. They are kinda universal, i use one to check if vro pumps are working. Hoses hook up just as you stated, in, out, vacuum to run it with.

 

[wippb]

Re: VRO pump replacement

I'll check that out <br />Thanks Mike,,JB

 

[trevorcday]

Re: VRO pump replacement

Switching to premix is a great idea. All of the VRO engines are arebuild waiting to happen. Putting an old style fuel pump on is kind of nice since it cleans up a lot of the plumbing under the cowling, but just disconnecting the oil injection is easy and inexpensive. There is a check for the VRO pump to see whether it has developed the internal leak that leads to lack of oil in the engine. It is relatively simple to do but really for all the trouble mixing fuel is why take the risk.

 

[wippb]

Re: VRO pump replacement

Hey mrmerc <br />Where is your shop up there in Peterborough. I have a trailer on Pigeon Lake in Bobcaygeon not far from you. I'll drop over if I need some parts.