New dude here on a quest for some mini insight.
I own an 09 R56 hatchback with 78k miles. I recently took my mini for service regarding a "limited power" message that I received. Upon inspection of the mini, the shop informs me that some codes say a cylinder was shut down due to carbon buildup. They suggest a spark plug change followed by a fuel injection cleaning.
Upon taking my car from the shop, four minutes into the drive, my car begins to make an erratic squealing noise. It was very very loud. I get home, and call the shop. They send a tow truck to retrieve it. They call me back and inform me the turbocharger is blown, through no fault of their own.
My buddy, who works for an unaffiliated garage tells me that when a car's injectors are cleaned the car must be warm and running for some time, to allow for the agents to properly clean the injectors and not harm anything else. He surmises that my mini was cold when they started the injector cleaning, causing the turbocharger to not handle the stress.
Is this true and is there any validity to this theory?
could anyone shed some light on the subject?