Oil Empty After Thirty Hours !

[phmadeira]

after 30 hours of engine trip
i stopped my yanmar 2GM20 , the next morning i checked the oil
there was no oil at all with the dipstick
i was full when we start the journey

of course a lot of oil in the engine room

what do you think ?
where is the leak ?

[Vasco]

Check it for leaks. If it's real dirty, clean it up first. Then run it, a leak that bad should be obvious.

[Kettlewell]

Was the oil filler cap on tight and the dipstick in the hole all the way? Valve cover gasket leaking? With that big of a leak I think you will probably be able to see it pretty quickly if you refill with oil and run the engine while watching. You can put some clean oil absorbent pads under the engine to more easily see where drips are coming down.

[phmadeira]

Originally Posted by Kettlewell

Was the oil filler cap on tight and the dipstick in the hole all the way? Valve cover gasket leaking? With that big of a leak I think you will probably be able to see it pretty quickly if you refill with oil and run the engine while watching. You can put some clean oil absorbent pads under the engine to more easily see where drips are coming down.

Was the oil filler cap on tight : YES
and the dipstick in the hole all the way? YES but a bit loose , just add some sikaflex that it can hold better in place
Valve cover gasket leaking? NO

i running the engine now

is all the oil can go out the oil dipstick ?
there was no a drop of oil , when i checked with the dipstick
the sea was a bit rought

[Kettlewell]

I doubt that much oil went out the dipstick if it was in the hole. You must have a leak somewhere that it is pretty significant. I'm assuming you don't think you are burning a lot of oil or else you would have a big cloud of black smoke coming out with the exhaust.

[jrd22]

I'm not familiar with the 2GM, but I had (my brother owns it now) a 3GM and it lost most of the oil while just running it in the slip for twenty minutes a few weeks ago. Turns out that there is a small external steel oil line that goes from the starboard side of the engine around the back and terminates under the starter on the port side. There are four banjo fittings on it and a crack developed near the fitting at the back of the engine. The new replacement line looks like it's now copper or bronze. If the 2GM has a similar external pressure line I would check it after filling the engine with oil. It was immediately obvious where the oil was leaking when I started the engine. Not easy to replace, two people were necessary unless you have full access to the starboard side of the engine.

[skipgundlach]

Oil filter tight? The last Yanmar I drove, it wasn't...

L8R

Skip

[Chief Engineer]

How are you making out?

[boatman61]

Don't suppose its something silly like someone forgot to do the drain plug up properly....

[mbianka]

Look for leaks underneath in the oil pan cover and gasket area too. Check the side of the engine for oil too up high. A blown head gasket could be leaking oil outside the engine. Guess how I know.

[phmadeira]

i will try to get the DYE ultraviolet , to see where is the leak

[zeehag]

my perkins discharged all its oil in only a few hours of motoring, but was repaired while under way so it cannot be too bad a problem except that it is there....tighten bolts, fix hoseclamps and good luck.

[Vasco]

Originally Posted by phmadeira

i will try to get the DYE ultraviolet , to see where is the leak

Clean the engine, dust with talcum powder. You'll find the leak.