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2004 DF140 Leaking Oil

Old 04-21-2015, 08:02 AM
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Default 2004 DF140 Leaking Oil

I ran my motor with muffs (checking for leaks after changing oil and gas filter) with no sign of leaks. I put the boat in the water and brought it up on plane and it ran great (just a few minutes total run time). I went down to the boat (it's on a lift) a few days later and noticed drip of oil on the outside of the lower cowling starting at the front under the powerhead going down the outside of the lower engine cover. Any ideas as I would like to get out for the spring striper run this week. Thanks!
Old 04-21-2015, 01:54 PM
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Anyone?
Old 04-21-2015, 03:52 PM
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Probably best to just try and follow the path of the drip, it's hard to just guess without being here, it could be just a small amount you spilled, or the filter is not tight, or the oil cooler O rings, or a gasket, or??.....
Old 04-21-2015, 09:16 PM
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Please post when you find out where the drip came from. I'm sure there will be a great number of DF140 owners who could benefit from your findings !




Old 04-21-2015, 09:51 PM
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Originally Posted by Wheresjoe View Post
I ran my motor with muffs (checking for leaks after changing oil and gas filter) with no sign of leaks. I put the boat in the water and brought it up on plane and it ran great (just a few minutes total run time). I went down to the boat (it's on a lift) a few days later and noticed drip of oil on the outside of the lower cowling starting at the front under the powerhead going down the outside of the lower engine cover. Any ideas as I would like to get out for the spring striper run this week. Thanks!

Oil filter tight?
Old 04-22-2015, 02:52 AM
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Did you use an after-market oil filter?

We have had a number of cases where the aftermarket filter has a slightly different shaped lip, resulting in the body of the filter bottoming out on the block when the filter is screwed on, the problem being that it hits bottom before the seal is firmly seated. So the filter seems to be on tight, but it isn't.

The result has been oil leaks, and in some cases, under pressure, the oil filter has blown off altogether.

As others have said, follow the oil trail, you should find the culprit.
Old 04-22-2015, 07:04 AM
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Thanks for the input. It was a manufacturer oil filter and was not leaking after installation. I will report back on findings. Thanks again.

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