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Old 01-01-2011, 03:07   #1
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Oil Sump Leak - Yanmar 4JH3E

Looks like I have a small leak from the sump gasket - perhaps 50ml after each use. I am still not sure this is the culprit but it is looking more like it as I check other areas.
Only seems to leak during the warm-up or cool-down period.
I will keep looking to track it down.

If it is the sump gasket - does the engine need to be lifted or can the sump be released in-situ ?

Any other likely areas on the engine ?
Has 5000 hrs but still running nicely.
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Old 01-01-2011, 07:11   #2
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Quote:
Originally Posted by FraidNot View Post
Looks like I have a small leak from the sump gasket - perhaps 50ml after each use. I am still not sure this is the culprit but it is looking more like it as I check other areas.
Only seems to leak during the warm-up or cool-down period.
I will keep looking to track it down.

If it is the sump gasket - does the engine need to be lifted or can the sump be released in-situ ?

Any other likely areas on the engine ?
Has 5000 hrs but still running nicely.
also check the dipstick tube attachment.

you'll have to look at the boat and clearances left to you by the builder. Do you have a deep engine bilge or shallow?
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Old 01-01-2011, 07:23   #3
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Might front main,back likely not to show.Around inj. pump & fuel pump.Often times difficult to find.ive it a good cleaning & watch.Good luck.marc
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