How to test a VRO?

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stsmith

Petty Officer 3rd Class
Joined
Jul 5, 2004
Messages
98
On the automatic oilers, VRO how does one test these before it is too late and the motor locks?
 
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seahorse5

Rear Admiral
Joined
Jan 24, 2002
Messages
4,698
Re: How to test a VRO?

The 1992 and later factory service manuals show the testing procedures for the "VRO" pump. There is a vacuum and pressure test, a NO OIL alarm test, and an oil flow test.<br /><br />For more "VRO" info, go the the FAQ section in these forums and click on choice F.
 
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CharlesW

Petty Officer 1st Class
Joined
Jul 8, 2003
Messages
335
Re: How to test a VRO?

One thing I did when I first purchased a motor with the VRO that I knew nothing about was to run a 50:1 fuel/oil mix until I was comfortable that the VRO was working. The extra oil won't hurt anything and no oil sure would.<br />I made a mark on my VRO oil tank and checked that oil was being used from the tank. I felt comfortable with the VRO after about three 6 gallon tanks were used. <br />FWIW, when I had to replace my fuel/VRO pump, it was because the fuel side quit working.
 
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stsmith

Petty Officer 3rd Class
Joined
Jul 5, 2004
Messages
98
Re: How to test a VRO?

Thanks Guys this is the place for answers!<br /><br />Smitty
 
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upfish123

Cadet
Joined
Aug 4, 2004
Messages
9
Re: How to test a VRO?

My owners manual says to use a 100:1 mix until you are sure the vro operation is working and oiling. I have heard too many stories of the vro failing and motors burnt so I always run the 100:1 ratio and have for years. Better safe than sorry. If you don't want to do that make sure you have some mix on board when the oil warning goes off!
 
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CharlesW

Petty Officer 1st Class
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Jul 8, 2003
Messages
335
Re: How to test a VRO?

Originally posted by upfish:<br /> make sure you have some mix on board when the oil warning goes off!
Click to expand...
Or keep a pint of oil in your toolbox. Never had to use it, but I know it's there if it is ever needed.
 
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