1 Series E87 118i (N43) 5-door
11 15 510
Measuring engine internal pressure (N40 /
N42 / N45 / N45T / N45si / N46 / N46T / N43)
Special tools required:
•
11 9 880
Necessary preliminary tasks:
•
Follow diagnosis instructions for pressure testing.
•
Check engine oil level.
Open oil filler cap.
Insert special tool 11 9 880 hand-tight into oil filler neck opening.
Attach 25 bar pressure sensor (1) to special tool 11 9 880 .
Start engine and run at idle speed.
Different fault profiles as example:
0.97 bar
Ambient pressure.
0.95 bar
Engine internal pressure normal.
If the deviation is significantly greater than -0.04 bar, the engine
ventilation system is faulty.
0.80 bar
Pressure control valve faulty.
If the deviation is significantly greater than -+0.04 bar, the
engine ventilation system is clogged.
1.07 bar
Clogged ventilation system, e.g. frozen, contaminated
or kinked vent line.
RA Measuring engine internal pressure (N40 / N42 / N45 / N45T / N45si / N46 / N46T
BMW AG - TIS
19.01.2013 17:09
Issue status (12/2007) Valid only until next DVD is issued
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