Today

[Csail]

Took boat out on my own in the fog and dark but oil warning light came on? Checked oil before leaving so any ideas why. Seems fine to me.Oil level is still how it was ie. full on the dipstick.

 

[sarabande]

which boat ? the super wizzy, or the raggy ? It might help if you could tell us the engine .

In both cases, if the oil level is OK, then the pressure sensor is trying to tell you something. Have you any means of attaching a pressure gauge to the system ?

 

[Csail]

The yacht , Thornycroft T95 1.5 diesel. 300 hrs.

 

[sarabande]

these people have oil pressure test gauges. With the variety of motors at Chateau Csail, it might be worth talking to them about one with an adapter.

They are in Bristol anyway.

http://www.pressuregauge.co.uk/

At what stage in the usage cycle did the warning light come on ? Is there a pressure gauge ? Any oil leak from the engine or the sensor pickup point ?

How long since the boat last used ? If a long time, then it could be a stuck pressure relief valve in the pump circuit.

 

[Csail]

It was after about 2 hrs but the gauge was reading fine. Fist time its been run for months.

 

[Cardiffcruiser]

It was after about 2 hrs but the gauge was reading fine. Fist time its been run for months.

If the guage was fine (and it's not faulty) the chances are that it's just a faulty pressure xducer. I've got a test gauge set with a range of adpters I can lend you if you want to prove the gauge.

 

[Allan]

Are you sure it was oil pressure? Lots of engines combine temperature and oil pressure. Maybe it is Temperature?
Allan

 

[Csail]

Temp gauge was fine too. Just the oil light and buzzer came on. I shut it down straight away.