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DIY Title: High Performance Ignition Coil Installation DIY
BMW Category: 3-series E36
Author (forum name): defkon99
Date Written: March 16th, 2006
Original Thread: http://www.unitedbimmer.com/forums/thread6854.html
Date Added to KB: March 16th, 2006

United Bimmer Do-It-Yourself Disclaimer:
The following tutorial is meant as a guide and is not guaranteed to be complete or 100% accurate.  By following this DIY, you understand any work done on your car is at your own risk and we hold no responsibility if you break something.  If you feel uneasy with this risk, we recommend you take your car to a professional mechanic to have the work done.  Otherwise, enjoy yourself and good luck!

Bavarian Autosport
High Performance Ignition Coil Installation

Safety Warning: Be sure the engine is cool before beginning Installation.

Installation Note: Depending on the mileage of your BMW, you may want to consider having a fresh set of spark plugs and valve conver gasket set on hand before begninin installation.

Procedure Note: These instructions will assume the installer is familiar with the standard ignition coil replacement procedures and has access to the appropriate repair manuals for the applicable BMW models.

3 Series 6 cyl. 92-02 except 02 M3

5 Series 6 cyl. 91-02

5 Series 8 cyl. thru 03

7 Series 8 cyl. thru 01

8 Series 8 cyl.

Z3 All 6 cyl. (Except M Roadster/M Coupe 01 on)

Z8 All

X5 6 cyl. thru 02
8 cyl. thru 02

1. Open the Engine hood. Remove the plastic Valve cover trim Panels by first removing the oil filler cap and the plastic plugs which cover the trim panel retaining nuts. On V8s, remove the center intake manifold trim cover in a similar manner.

2. For each coil, gently pry up the coil harness plug lock clip and remove the harness plug from the coil. To avoid confusion and screwing up which cable goes where do 1 at a time starting from the front or from the back whatever is easier for you, I did these from the front and worked my way back.

3. Remove the two coil mounting bolts from coil the coil and gently pull up the Coil assembly. The spark plug connector boot may be stuck to the plug. If so, twist the coil a bit while pulling up. (Repeat for each coil)

4. A) Inspect spark plug cavities for evidence of any oil. If there is oil in any of the cavities, the valve cover gasket is leaking and should be replaced. The oil can cause random mis-fires and will contribute to deteriorization of the spark plug connector boots.

B) If you’re installing new spark plugs, do so at this point.

5. Add the silicone dielectric compound included with your coils,
Info:Silicone Dielectric Compound conditions spark plug wires and boots to prevent deterioration and fusing to spark plugs. Eliminates arcing and voltage leaks.

6. Carefully install the new high-performance coil and boot assemblies over the spark plugs and push down until the coil is fully seated and against the valve cover. Install the coil retaining bolts.
7. Install the coil harness plugs and secure the retaining clips on the plugs.

8. Install the plastic trim cover and the oil filler cap.

Now take your bimmer for a ride!

To read user reviews and comments, or to post your own, please first register on the United Bimmer community forums, then visit the following link to the original thread:
- http://www.unitedbimmer.com/forums/thread6854.html

If you used this DIY and it worked for you, please post and let the author know it was helpful!  This praise alone motivates users to write more DIYs and keep giving back to the BMW community.  Thanks!

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