2005 Cooper S Oil Leak - Travels the length of the car? - MINI Cooper Forum
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Old Jun 2nd, 2014, 03:04 AM
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2005 Cooper S Oil Leak - Travels the length of the car?

As described in the title, I appear to have a rather aggressive oil leak. First thoughts were the front crankcase seal, which involved removing the crankcase pulley (harmonic damper?).

Replaced that, but found it suspicious at the lack of oil inside the pulley itself for this to be the issue. Cleaned up the car as best as I can, in an effort to now retrace a leak.

What else leaks from the front that could travel such a way? It's mainly concentrated on the crankcase side of the engine, but my wishbone is getting coated too. Any help would be most appreciated.

Thank you in advance.
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Old Jun 2nd, 2014, 06:58 AM
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Oil can be blown out at any seal or gasket if the engine crankcase breather system isnt clear, the pressure will find the weakest point and get out from there taking oil with it
Check the engines breather hoses are all clear and not deteriorated and maybe collapsed inside?
Excess crankcase pressure can be caused by a worn engine too with combustion gasses getting by the rings.

If you cant see directly where the leak is coming from, clean the underside down as best you can, or steam clean it, and park the car on a sheet of cardboard after a run to get an idea where the drips coming from.
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