bmw Workshop Repair Guides

BMW Workshop Service and Repair Manuals

3 RA Checking Engine Idle Speed And Exhaust Gas Contents (M50,M52,S50,S50US) - Vehicl > < 2 RA Check Engine Idling Speed And Exhaust Contents (S50)
Page 2
background image

Measure exhaust content in front of catalytic converter.

Unscrew bolts.

Connect special tool 13 0 110 to extraction tubes.

Connect measuring sensor of exhaust tester to special tool
13 0 110.

3) Note:

Before correcting the exhaust/idle setting, first ensure that
there is no malfunctions on the engine, in the ignition system
or the fuel injection system.

For example, if the exhaust/idling speed value is too high:

Check injector nozzles.

Check fuel delivery pressure.

Check coolant-temperature sensor.

Check air intake system for leaks.

Check idling speed valve.

For example, if the exhaust/idle value is too low:

Check hoses and connections for idling speed control and

localize the air leak.

Check air intake system for leaks.

Check idling speed valve.

After protracted period at idling speed, check spark plugs for
sooting (carbon buildup), cleaning if necessary.

RA  Check engine idling speed and exhaust contents (S50):

BMW AG - TIS

09.02.2013  21:41

Issue status (12/2007) Valid only until next DVD is issued

Copyright

Page  - 2 -

3 RA Checking Engine Idle Speed And Exhaust Gas Contents (M50,M52,S50,S50US) - Vehicl > < 2 RA Check Engine Idling Speed And Exhaust Contents (S50)