False No oil alarm

[oldmanndc]

Just replaced VRO pump on my 1998 90hp. Despite fact that it getting plenty of oil, the "no oil" alarm will not stop. Old pump had stopped moving gas and motor did not run well on the resulting oil rich mixture.

Verified oil in line was up to pump. Motor smoke confirms adequate oiling.

What, beside a bad VRO pump, could cause this problem?

[Joe Reeves]

A "No Oil" alarm would be a short beep every other second. Is this what you were receiving? If not... describe.

[oldmanndc]

False no oil alarm

It is the rapid beep no oil alarm.

[Joe Reeves]

If the alarm is indeed the rapid beep, beep, beep, beep every other second, that would indicate air in the oil line OR a failing VRO... and since it's not likely that a new VRO would be failing........................

(Priming The VRO Pump)
(J. Reeves)

When hooking up or installing a VRO whether it is a new or original VRO pump, it must be primed in order to dispel any air that might be in the oil line.

Have the Oil line attached to the engine fitting BUT detached from the VRO. Add a piece of fuel hose if necessary to the oil line so that it can be aimed into some sort of container.

Pump the oil primer bulb, catching the oil flowing out of the line into the container until you are absolutely sure that you have rid the oil line of every bit of air that might have been trapped there.

Now, connect the oil line to the VRO and secure it. When the oil line is secured, apply pressure to the oil primer bulb ONE TIME only. That's it.