Dear member:

Another member of another website posted the following information. It was really useful to me.

mackskibum
Senior Member
Registered: Jul 2000
Location: Northampton, PA, USA
Posts: 163
4.4 Spark Plug Replacement Procedure OK here goes- I searched for this info, and it seemed tough to come by- so here it is for everyone.

1. Turn the 4 hex head screws on the intake cove 1/4 turn and remove cover.

2. Locate the 2 small access covers on each side of the engine (located in the plastic covers that say "BMW" on them. These are square and are about 1"x1", and can be tough to see. You will find a small slot at the lower edge of the cover that a small screwdriver or the like can be used to pry off the covers.

3. Remove the 2 bolts that hold this trim cover in place and remove the covers. You will now see the individual coils at each cylinder.

4. Remove the connector from each coil by raising the connector lock (metal piece- it slides up to release the connector.)

5. Remove the 2 nuts from each coil assembly. You will notice that there are additional ground connections on one coil on each side- remember to return these to their original position.

6. Grab each coil by hand and coax them up and off the spark plug- the whole assembly should come out as a unit. Once these are out, you can access the spark plugs with a 5/8" plug socket.

7. Reassemble.

NOTES:

Try not to pry on the coils- they can be easily damaged- be patient and they should come out by hand.

Do not remove any fasteners from adjacent cylinders with a spark plug out of a hole- a dropped nut will surely find its way down there.

Look at the spark plug connectors for any sign of arcing- you may need to replace one or all of them as part of the change.

Put a little dab of anti-seize compund on the new plugs to make them easier to remove in the future.

Be careful when threading the new plugs in so as to not damage the threads in the head- get it started by hand and do not over-tighten.

All in all an easy job, and one last word of advice: Do not wait until 100K to do this- I did, and the center electrode of the original plugs was eroded below or flush with the ceramic insulation at the center of the plug.
__________________
Mackskibum aka Dave Austin
'66 911 Work In Progress (#303734)
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