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Author Topic:   VRO warning horn
Mark Gallagher posted 07-15-2000 07:54 PM ET (US)   Profile for Mark Gallagher   Send Email to Mark Gallagher  
Three times this season my VRO warning horn has went off after first start up off the day and while idling away from dock. The horn would blow 1/2 second on, 1/2 second off for a few seconds. As soon as I would throttle up and start to accelerate the horn would stop and never act up again.

Engine runs great and oil level in tank is being consumed as normal. 220 hours on Johnson 115 V4 1995 engine. Always used Johnson oil, OMC carbon guard and meticulously maintain engine, etc. Any ideas?

By the way, warning horn supposedly blows short continious beeps for low oil tank level, 1/2on 1/2off for lack of oil flow, and constant for engine overheat.
Thanks, Mark

triblet posted 07-16-2000 02:23 AM ET (US)     Profile for triblet  Send Email to triblet     
My guess is air in the oil line. Maybe
just a little air getting in at the engine
end.

Also, my '97 Evinrude has lights on the
tach for this sort of thing. Does yours?
If so, what do the say? (Beep counting
is kinda subjective)


Chuck Tribolet

JimG posted 07-16-2000 01:29 PM ET (US)     Profile for JimG  Send Email to JimG     
Mark

Your alarm may be sounding after storing and traveling with engine in raised position which can let the oil drain from the reservoir in your engine.

Clark Roberts posted 07-17-2000 07:35 AM ET (US)     Profile for Clark Roberts  Send Email to Clark Roberts     
Mark, your engine has no reservoir under the cowling... don't let this one go... get to the bottom of it.. the VRO Pump is mounted to the airbox and and has a flow sensor (electronic) built in... if air gets into the line coming from the oil tank , it can cause the alarm.. make sure the squeeze ball is hard .... maybe take her in to a dealer for an EKG... could be a bad sensor!
Don't take a chance... if she's using oil as normal that's good but something caused the alarm to go off... I would add 100:1 oil to the gas until question answered.. that won't hurt engine or plugs and will save engine if oil pump fails completely! Just my two cents worth... Clark.. Spruce Creek Navy
Sarasota Whaler posted 07-25-2000 03:25 PM ET (US)     Profile for Sarasota Whaler  Send Email to Sarasota Whaler     
Mark,

I am glad to see someone else having the problem I recently had with my 1993 90' Johnson. My problem was my oil pump was going out. At idle the boat would run fine until about 5-7 minutes when the same alarm would go off. Once you were to put the boat on a plane, it would quit. I had a machanic look over the boat, test the sensor, oil line, and oil tank to make sure it was in fact the pump. We were able to trace it to the pump. Also, you could hear a light "ticking" coming from the pump when it was running. The quick remedy was to isolate the pump and quit using the VRO. I did some research and found that this was a common remedy. In fact, many owners of newer engines have the VRO taken off to ensure that the engine is recieving oil. At this point, I am mixing 1 pint oil to 6 gallons of gas. A new oil pump for my engine costs between $190 and $220 plus labor.

Good luck.

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