Bypassing VRO on 1988 Ev 90 V4

[ggimlick]

I've been told the VRO pump on my motor is bad and needs to be replaced. I've searched the forums for VRO info and it seems that I can plug the line and remove the alarm wired and continue as long as I pre-mix my oil and fuel.

Am I missing something here or is it really that simple? The mechanic said he ran the motor by hooking up a premixed tank in the shop.

 

[tashasdaddy]

Re: Bypassing VRO on 1988 Ev 90 V4

there are 2 real good threads in this link, johnny/rude vro disconnect and more about vro. plus lots more info. welcome to iboats.
http://forums.iboats.com/forumdisplay.php?s=&f=31&page=1&pp=50&sort=lastpost&order=desc&daysprune=-1

 

[ggimlick]

Re: Bypassing VRO on 1988 Ev 90 V4

Thanks for the welcome and the link. I had found the article and read it earlier, lot's of good info there. I think I'm going to try the plug and disconnect method and see how it goes. Since the marina mechanic told me it ran fine when he hooked it to a premixed tank I'm assuming the pump side is working okay.

Now on to do the lower unit seals and waterpump.

 

[npd4432]

Re: Bypassing VRO on 1988 Ev 90 V4

I believe that evinrude makes a part to bypass the vro pump. I am not sure what the part # is but I know it exists.

 

[tashasdaddy]

Re: Bypassing VRO on 1988 Ev 90 V4

if i'm not mistaking, it's just the fuel pump without the oil side. i have the 1988 88 spl, which i the same engine without VRO.

 

[Cortes100]

Re: Bypassing VRO on 1988 Ev 90 V4

yes it really is that easy. I have been running my 100HP for the last year with the oil side disconnected.
Just make sure all your lines and clamps are in good shape.

 

[Dhadley]

Re: Bypassing VRO on 1988 Ev 90 V4

Welcome!!

I'd sure ask the mechanic why he thinks the pump is bad just on the oil side.