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Old 05 June 2010, 04:48   #1
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Can anyone advise

Hi

I ran my Yamaha 60 up in a barrel of water for about 10 minutes it appeared to run fine.

This was the first run since laying up over a year ago.

later there was a significant amount of oil floating on the water surface. It smells like transmission oil.

I didn't run the engine in gear at all.

I was intending to change the gear oil but am now unsure if there is a leak.

Is there some form of oil seal behind the propellor which may need attention?


Thanks

Tufty
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Old 05 June 2010, 18:19   #2
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Maybe-drop the gear oil and see if it's emulsified or water runs out.
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Old 06 June 2010, 05:48   #3
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I'd put money on this is oil that has come out of the exhuast and there is nothing to worry about.
It won't do any harm to see what the gearbox oil is like as its easy to do.
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Old 06 June 2010, 05:57   #4
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Quote:
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I'd put money on this is oil that has come out of the exhuast and there is nothing to worry about.
It won't do any harm to see what the gearbox oil is like as its easy to do.
I thought that, but it doesn't usually smell like transmission oil.
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Old 06 June 2010, 05:59   #5
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I thought that, but it doesn't usually smell like transmission oil.
Very true.
Not sure if he's ever ran an engine up in a barrel as it might shock some people how much fuel and oil comes out.
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Old 06 June 2010, 06:01   #6
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Very true.
Not sure if he's ever ran an engine up in a barrel as it might shock some people how much fuel and oil comes out.
Fair point.

I love the smell of 2 stroke in the morning. Smells like....victory
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Old 06 June 2010, 06:10   #7
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When I lived at my parents we had a shed full of creosoted wood and a load of petrol and two stroke oil, smelt lovely!
Can't beat a few revs on the warm up lever!
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Old 06 June 2010, 07:36   #8
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Hope this is the case

Quote:
Originally Posted by chewy View Post
Very true.
Not sure if he's ever ran an engine up in a barrel as it might shock some people how much fuel and oil comes out.
It may be just oil from the exhaust, I have ordered some gear oil and a pump so will
drop the gearbox oil in the week and see what occurs.

Thanks for your help, I will update when I've done the oil change.

Cheers

Tufty
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Old 08 June 2010, 09:14   #9
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Not Looking Good

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Originally Posted by TUFTY View Post
It may be just oil from the exhaust, I have ordered some gear oil and a pump so will
drop the gearbox oil in the week and see what occurs.

Thanks for your help, I will update when I've done the oil change.

Cheers

Tufty
I drained the gearbox today and am not too pleased.

After a initial dribble of clear water a large quantity of "runny green snot" drained slowly out!!!!

I guess this is the oil emulsified with water which has got into the gear casing.

What should I do next?
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Old 08 June 2010, 10:25   #10
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Either replace the gear oil and retest, or have a shop do a pressure test on it (pump the cavity to a couple of pounds over ambient pressure, and see if it holds the pressure or leaks down.)

I would strongly suggest the latter.

jky
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