Engine/Emissions - Oil Consumption/Rough Running Complaints
SI B11 07 12
Engine
November 2012
Technical Service
This Service Information bulletin supersedes SI B11 07 12 dated July 2012.
[NEW] designates changes to this revision
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 (1) and (3). Each of the connecting lines will have an index
number printed on the connection closest to the cylinder head cover.
2010 BMW 750i (F01) V8-4.4L Turbo (N63) Page 395
2. Production code (1)
Part Number and Index Number (2)
Example: 7575639-07
The index number is separated from the 7-digit part number by a hyphen. In this example, it is "07".
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.
(1) Connecting line bank 1
(2) Vent pipe bank 1
(3) Connecting line bank 2
(4) Vent pipe bank 2
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.
2010 BMW 750i (F01) V8-4.4L Turbo (N63) Page 396
