Why does my 4 cylinder late model (2011 to 2016) BMW makes a whining noise?
Please note there is a technical service bulletin issued by BMW for this particular issue, which states: There is an issue with the oil pump chain which must be replaced to prevent fatal engine failure.
To get access to the oil pump chain drive the timing chain and related components has to be removed and must be renewed at the same time. There is an actual laundry list of parts which must be replaced at the same time, many of the specific bolts are stretch lock type meaning they are meant for single use only.
This is a major repair which requires considerable mechanical knowledge with numerous special tools to be done completed precisely as per BMW repair instructions.
We highly recommend to have it done by a professional only, with considerable BMW experience, who knows how and naturally having the essential special tools is a must.
We can assure you and in turn can show you all the relevant tools and documentation upon request as we do this particular and essential repair daily.
If you have any further questions please see us in person. We wish you all the best from Techmax