2001 200 Optimax 4 beep alarm

[Mikeytogo]

Couple weeks ago got the Optimax 4 beep alarm every 2 minutes. Bit of research showed water in fuel separator or low oil in engine mounted tank. Replaced water separator filter. Still got 4 beep alarm. Engine oil tank full all along. Took engine mounted tank off and found magnet had separated from float. Installed new oil reservoir tank on engine; filled and bleed system. Still getting 4 beep alarm. Any further suggestions out there? Appreciate any feedback.

Mike

[davemvegas]

Could be the water in fuel sensor that is bad. Older opti's have a single wire sensor in the spin on fuel filter on the VST. Newer opti's have a 2 wire sensor screwed into the VST housing. To check sensor, use OHM meter on the sensor.

[Mikeytogo]

Thanks, Bottom cylinder on passenger side let go while I had it on the hose in driveway. Pulled the spark plug and oil came pouring out. Love the boat, may re-power. Thanks for the input!!