Bulletin No: SIB-11-07-12
Date of Bulletin: 08/27/2012
Summary Description:
BMW: WHILE DRIVING VEHICLE, AT TIMES WOULD BE ROUGH RUNNING; WHITE OR BLUE SMOKE SEEN EXITING EXHAUST SYSTEM AND THE ENGINE OIL IS CONSUMED ABOVE SPECIFICATIONS. *PE UPDATED 1/11/13. *PE

SUBJECT:
N63 Engine: Oil Consumption and/or Rough Running Complaints
MODEL:
E70 E71 F01 F02 F04 F07 F10 F12 F13

Situation:
The vehicle may consume engine oil above the permissible specification, and may run rough at times. White or blue smoke may also be seen exiting the exhaust system.

Cause:
The construction material of the crankcase ventilation connection lines and vent pipes may become brittle from engine compartment temperatures.

Procedure:
E70 and E71 produced to 3/2011
F01, F02, F04, F07, F10, F12, F13 produced to 1/2011

1. Remove the engine cover and inspect the crankcase ventilation connecting lines.
Each of the connecting lines will have an index number printed on the connection
closest to the cylinder head cover.

2.Production code
Part Number and Index Number
Example : 7575639-07
The index number is separated from the 7-digit part number by a hyphen.

3. If the index number is “7” or lower, both crankcase ventilation connecting lines and vent pipes need to be replaced.
The improved replacement parts will have an index of “8” or higher.

4. Each cylinder head cover and vent pipe connection has two M6x18 screws attaching these components. The torque specification for these screws is 10 +/- 1.5 Nm.
Important: Do not replace the cylinder head covers for this complaint.

E70 and E71 produced from 3/2011
F01, F02 F04, F07, F10, F12, F13 produced from 1/2011
Inspect the crankcase ventilation connecting lines and vent pipes connections; if found loose, properly secure them.
Important: Do not replace the cylinder head covers for this complaint.