SPARK PLUG DIAGRAM

1993 BMW 740

Tiny

baja366

September, 27, 2010 AT 4:37 PM

Engine Mechanical problem
1993 BMW 740 V8 Two Wheel Drive Automatic 180000 miles

i need to know how to replace the spark plugs on my 1993 bmw 740i. Please Help!

FOUND 5376 RELATED QUESTIONS

1 Answer

Tiny

rasmataz

September, 27, 2010 AT 6:50 PM


http://www.2carpros.com/forum/automotive_pictures/12900_fo_157.jpg


Firing order 1 5 4 8 6 3 7 2

**REPLACING ALL SPARK PLUGS**

Switch off ignition.


http://www.2carpros.com/forum/automotive_pictures/12900_s1_68.jpg



Version 1: (acoustic cover screwed down)

Remove seal caps (1) and unfasten nuts (2).
Remove acoustic cover.


http://www.2carpros.com/forum/automotive_pictures/12900_s2_60.jpg



Version 2: (acoustic cover with press-stud fastener)

Open press-studs (1 ... 4) one at a time, at the same time lifting the acoustic cover slightly.
Once all four press-studs have been opened, remove the acoustic cover.

Installation Note : Position acoustic cover and press downwards until press-studs (1 ... 4) click into place.


http://www.2carpros.com/forum/automotive_pictures/12900_s3_5.gif



Remove sealing caps, unfasten nuts.
Remove cover from ignition coils.


http://www.2carpros.com/forum/automotive_pictures/12900_s4_7.jpg



Unfasten plug connection.


http://www.2carpros.com/forum/automotive_pictures/12900_s5_2.jpg



Unfasten screws on ignition coils.

Installation Note : Ground straps of cylinder head cover must be secured on ignition coils for cylinders 3 and 6.


http://www.2carpros.com/forum/automotive_pictures/12900_s6_2.jpg



Unscrew and remove spark plugs with special tool 12 1 171.

Installation Note :
*Tighten using special tool 12 1 171 and special tool 12 1 200 (torque limiter)
*Without special tool 12 1 200, not tightening torque.

Tightening torque = 30 - 33 Nm (22 - 24 ft lbs)

http://www.2carpros.com/kpages/auto_repair_manuals_alldata.htm

Please login or register to post a reply.

Spark Plug Replacement Toyota Corolla 2000-20
Spark Plug Replacement Mercedes Benz C230
Spark Plug and Wire Replacement Ford Mustang
Spark Plug Replacement Toyota Tacoma
Spark Plug Replacement Mercedes Benz ML500
Spark Plug Replacement Ford Explorer 4.6L V8