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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Thu, Jan-12-2017, 04:48:20 AM   #1
ClutchKickChris
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Question Is this leak likely from the vanos unit main seal?

Have an s54 I'm rebuilding and am seeing lots of oil and dirt below the vanos unit asllthe way down the timing cover, is this common?

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Old Thu, Jan-12-2017, 04:49:21 AM   #2
ClutchKickChris
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Default Re: Is this leak likely from the vanos unit main seal?

Umm...Sorry for the absolutely ridiculous sized image, damn modern cell phones...
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Old Thu, Jan-12-2017, 07:31:48 AM   #3
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Default Re: Is this leak likely from the vanos unit main seal?

Check how your chain tensioner is torqued



#5 on this image.
Torque is 70 Nm / 52 ft-lb.
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Old Thu, Jan-12-2017, 01:54:34 PM   #4
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Default Re: Is this leak likely from the vanos unit main seal?

Mine was like that, I changed the vanos gasket with a new oem one when I rebuilt it and all is well now.
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Discussing Is this leak likely from the vanos unit main seal? in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)