VRO Failure & Life Expectancy

[ct1762@gmail.com]

I still have the original OMS pump on my '98 Johnny 150HPV6. I do carry a gal of 2 cycle oil with me at all times. Should the OMS fail, I can dump the correct amount of oil (or thereabouts) to make a 50::1 fuel mix in the 63Gal fuel tank. I would need to spend some time rocking the boat to mix it, though. It would also be a good idea to d/c the fuel line and pump primer until you see the dye in the 2 cycle oil come thru.

youd need to drain the float bowls as well, because by the time the alarm sounds it would most likely have just raw fuel in them.

 

[Terrapin]

The pulse limiter is nothing but a ---" flow fuse " ----To protect the VRO from a high pressure/ airflow event.---It closes in the event of high airflow to the VRO.------The housings on the VRO would explode if subjected to too much pressure.

Can the pulse limiter be permanently damaged by a high pressure / airflow event like a lean sneeze or backfire? Or, does it recover from the event and keep working?

 

[Terrapin]

Factory Manual:
1 to 4 Hg with no bubbles.
Bubbles or in excess of 4Hg requires further testing

Cavitation (air) could play a role as well.

I discovered this in my OEM service manual and now understand the test is a little more involved than simply pulling a vacuum with my MityVac. Thanks for pointing this out.

 

[ct1762@gmail.com]

I discovered this in my OEM service manual and now understand the test is a little more involved than simply pulling a vacuum with my MityVac. Thanks for pointing this out.

you can make your own little test tool. i made one out of a large syringe.