2nd Gen R56 Cooper S Most liked posts in thread: 2008 R56 leaking oil passenger side

Thank you for your prompt response.
I will see if I can get to that net and torque it to specifications and stop the leak.
Ideally I will not have to take Winston in to dealer since I have no warranty now.
It's well worth a try.

 

I checked all hot intake hoses, removed and cleaned top side sensor. OBD II will not clear P115D CEL code. If I turn off engine and try to clear I get FAIL on OBD II. If when running engine on erase I get DONE and then code immediately returns. Any Idea's?:confused5:

I may use this as excuse to buy new ALTA Performance Hot Side Turbo Inlet Tube, but want to fix CEL first.

 

I removed all upper area hoses and cold air intake parts. The chain tensioner nut was loose and a small amount of oil around the nut. Torqued the nut down to 48ftlb and put everything back.





I have to test it out, but found serveral different part numbers for the part:
11-31-7-597-895
11-31-7-534-833 and a few more.

 

Fixed photos and you should be able to see them.

I ran a good test and no more leakage, however I am concerned at the dark black of the oil that was spilled. I have always changed every 7,500 miles or so and last did it 4k in October.
Also had a CEL light come on after a hard test, but saw the top hose with a snap ring had popped off. I will re-seat and test again.
Should I still replace the chain tensioner bolt? :fingerscrossed:

I got a P115D CEL error.....back to checking the hoses and connections.

 

I will take apart and look for "O" ring. Unaware of one when took apart.
Adding to this issue is a problem with Vac line (See Photo) rubbing my Cold Air Intake RAM Scoop. Wanted to modify line to go under instead of over the intake line but need it to be PVC so it will not collapse.



Is the "O" Ring attached to the outside of the metal flange?
It's the first hose that is 45 degree angle at top of hot air intake line and has a U shape clip.

 

Thanks Metalman, the leak was at the "O" ring. Cleaned and re-seated and CEL finally cleared. Looking to see if the ALTA-MINI COOPER R56 TURBO INLET TUBE is worth changing or the NM Engineering Hi-Flow Charge Pipe. The latter removes the OEM Sound Chamber, but I will look in other post to see if it affects sound more than I am willing to accept.
Thanks again.