BMW Distributorless Engines Firing order ?

The diagram is shown below for firing order.

To avoid confusion, always remove and label the wires one at a time, for replacement.

Fig. 2.5L (M50), 2.8L (M52), and 3.0L (S50) Engines Firing order: 1-5-3-6-2-4 Distributorless ignition system

Fig. 3.0L (M60), 4.0L (M60) and 4.4L (M62) Engines Firing order: 1-5-4-8-6-3-7-2 Distributorless ignition system

Fig. 5.4L (M73) and 5.6L (S70) Engines Firing order: 1-7-5-11-3-9-6-12-2-8-4-10 Distributor rotation: Clockwise

NOTE

To avoid confusion, always replace spark plug wires one at a time.

Fig. M50/M52/S50 Engines Engine Firing Order: 1-5-3-6-2-4 Distributorless Ignition System

Fig. M60/M63 Engines Engine Firing Order: 1-5-4-8-6-3-7-2 Distributorless Ignition System

-------------


This detailed diagrams will help you.

For more car related problem troubleshooting:---

This are the sections, you can go through and click the link to read its troubleshooting.

---------

The car will not start?

http://schematicsdiagram.blogspot.com/2011/06/car-will-not-start.html

-----------------

Car will not crank?

http://schematicsdiagram.blogspot.com/2011/06/car-will-not-crank.html

-----------

Car has no spark?

http://schematicsdiagram.blogspot.com/2011/06/car-has-no-spark.html

-------------

How to troubleshoot car battery?

http://schematicsdiagram.blogspot.com/2011/06/how-to-troubleshoot-car-battery.html

-----------------

How to test starter solenoid?

http://schematicsdiagram.blogspot.com/2011/06/how-to-test-starter-solenoid.html

--------------------

How to test cars starter?

http://schematicsdiagram.blogspot.com/2011/06/how-to-test-cars-starter.html

How to replace starter in car?

http://schematicsdiagram.blogspot.com/2011/06/how-to-replace-starter-in-car.html

-----------

car will turn over but will not start?

http://technoanswers.blogspot.com/2011/05/car-will-turn-over-but-will-not-start.html

-----------------

Car wont start?

http://howtobyme.blogspot.com/2011/10/car-wont-start.html

----------

How does distributorless ignition system works on BMW 325?

General Information

Beginning with the introduction to North America in 1992 of the E36 chassis/platform, the Double Overhead Camshaft 4-cylinder M42 and 6-cylinder M50 engines found in the 3 Series vehicles have been equipped with a distributorless ignition system. The ignition timing and ignition advance are controlled by the Powertrain Control Module (PCM) to match the driving, fuel and atmospheric conditions. The PCM optimizes the ignition timing using input from a collection of sensors. The ignition timing can be checked for diagnostic purposes, although it cannot be adjusted. The distributorless ignition system uses one ignition coil per cylinder, unlike the distributor type system that has one ignition coil for the entire system and uses a distributor to dispense the high-voltage ignition to the spark plugs.

The distributorless ignition system, which uses individual ignition coils, operates on the same principle as those on the distributor-equipped engines. However, instead of the distributor's rotation being used to distribute the spark from the ignition coil, the PCM controls the switching of the current through the primary windings for each of the individual ignition coils. When current to the ignition coil is stopped, a high voltage current flows directly from the ignition coil to the spark plug.

The PCM contains the memory for basic ignition timing for different engine speeds and manifold airflow rates. The PCM also adjusts the ignition timing according to engine coolant temperature. The Cylinder Position (CKP) sensor is used by the PCM to monitor the crankshaft speed. A misfire can be detected by the PCM if the crankshaft speed fluctuates.

The following sensors are used by the PCM for ignition timing control:

Top Dead Center (TDC) sensors. These two sensors, TDC1 and TDC2, determine ignition timing during start up and when the crank angle is abnormal

Cylinder Position (CKP) sensor. This sensor detects engine speed

Manifold Absolute Pressure (MAP) sensor. This sensor detects the intake manifold air volume

Engine Coolant Temperature (ECT) sensor. This sensor monitors the engine coolant temperature

Knock Sensor (KS). This sensor allows the PCM to adjust ignition timing for the octane rating of the gasoline being used

Information pertaining to these sensors is covered in more detail in Section 4 of this manual.

Fig. The distributorless ignition system uses a separate ignition coil for each cylinder. The coil packs are located under a trim cover-M50 engine shown

------------

For more car related problem troubleshooting:---

This are the sections, you can go through and click the link to read its troubleshooting.

---------

The car will not start?

http://schematicsdiagram.blogspot.com/2011/06/car-will-not-start.html

-----------------

Car will not crank?

http://schematicsdiagram.blogspot.com/2011/06/car-will-not-crank.html

-----------

Car has no spark?

http://schematicsdiagram.blogspot.com/2011/06/car-has-no-spark.html

-------------

How to troubleshoot car battery?

http://schematicsdiagram.blogspot.com/2011/06/how-to-troubleshoot-car-battery.html

-----------------

How to test starter solenoid?

http://schematicsdiagram.blogspot.com/2011/06/how-to-test-starter-solenoid.html

--------------------

How to test cars starter?

http://schematicsdiagram.blogspot.com/2011/06/how-to-test-cars-starter.html

How to replace starter in car?

http://schematicsdiagram.blogspot.com/2011/06/how-to-replace-starter-in-car.html

-----------

car will turn over but will not start?

http://technoanswers.blogspot.com/2011/05/car-will-turn-over-but-will-not-start.html

-----------------

Car wont start?

http://howtobyme.blogspot.com/2011/10/car-wont-start.html

----------

Distributor Details for 2005 BMW 325?

Distributor

The ignition rotor in the distributor assembly used on the S14 and M20 engines is driven off the front of a camshaft. The sole purpose of the distributor is to distribute the high energy ignition from the ignition coil to the spark plugs. Aside from the distributor cap and rotor there are no additional ignition components located within the distributor housing. The distributor housing serves only as a mounting surface for the distributor cap.
The ignition timing is controlled by the DME control unit. No adjustment is possible.
This details will help.

---------

For more car related problem troubleshooting:---

This are the sections, you can go through and click the link to read its troubleshooting.

---------

The car will not start?

http://schematicsdiagram.blogspot.com/2011/06/car-will-not-start.html

-----------------

Car will not crank?

http://schematicsdiagram.blogspot.com/2011/06/car-will-not-crank.html

-----------

Car has no spark?

http://schematicsdiagram.blogspot.com/2011/06/car-has-no-spark.html

-------------

How to troubleshoot car battery?

http://schematicsdiagram.blogspot.com/2011/06/how-to-troubleshoot-car-battery.html

-----------------

How to test starter solenoid?

http://schematicsdiagram.blogspot.com/2011/06/how-to-test-starter-solenoid.html

--------------------

How to test cars starter?

http://schematicsdiagram.blogspot.com/2011/06/how-to-test-cars-starter.html

How to replace starter in car?

http://schematicsdiagram.blogspot.com/2011/06/how-to-replace-starter-in-car.html

-----------

car will turn over but will not start?

http://technoanswers.blogspot.com/2011/05/car-will-turn-over-but-will-not-start.html

-----------------

Car wont start?

http://howtobyme.blogspot.com/2011/10/car-wont-start.html

----------