HELP! 2003 200 EFI 3.0 Constant Alarm

[Ballboy]

1. Running down the lake pushing around 5500 rpms and a constant alarm started going off (constant beep). Seemed to be peeing water well, but shut it off immediately. Take cowling off and check oil reservoir and it's low. Next check the oil tank and it has plenty of oil, but while unscrewing the lid it released a lot of air pressure. Tighten everything back and start motor and oil reservoir on motor fills itself back up. All good the rest of the day.

2. Two trips later it does the exact same thing. Fix it the same way.

3. Last time out same dang thing (except on an idle speed lake). This time the oil reservoir on the engine was full and the alarm wouldn't go off.

Is this common? Easy fix? Any help would be greatly appreciated!!

[SilverFox579]

3L forum is 2 below this one be sure to provide engine serial number too.

Sounds like your check valve is bad.

[Ballboy]

Thanks! I'll post in that forum.