Random engine tube in bilge

[jomo]

I found this clear plastic tube in the bilge a few days ago when checking the engine after a trip.
https://drive.google.com/file/d/138SRH9 ... sp=sharing

I have no idea where it goes. I do see another clear plastic tube in the engine that is loosely connected. The engine ran fine and didn't have any issues (no alarms, oil pressure was fine, engine temp was good).

 

[ALICE J]

I would check the coolant overflow either from the engine or expansion tank. Or the oil filler area. On my Yanmar, the area around the filler cap has a rubber catchment surround that has an overflow hose that leads to the bilge. :roll: Just a guess.

 

[Dale777]

Another guess:

This might be a drainage hose that has slipped off from one of the cockpit cup holders.

 

[Irish Mist]

It looks to me like one of the lines for pumping the oil out of the dipstick hole for an oil change.