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You Lick It, You Own It
14,417 Posts
not really... it's quite simple and straight forward. just remove the cover and the coil and stab at it.

164 Posts
Spark plug - replacing

E-39 engines use a coil-over-spark plug configuration, with one ignition coil above each spark plug. Spark plugs should be removed only after the engine has cooled.
• Remove acoustic cover over fuel injectors/intake manifold:
o 6-cylinder engine: Remove oil filter cap
o Remove plastic trim covers
o Remove cover hold-down bolts. Remove coil cover(s)
o 6-cylinder engine: Temporarily reinstall oil filter cap to keep out contaminants
• Remove ignition coil grounding harness
• Remove ignition coils:
o Pull up on spring clips to disconnect ignition coil harness connectors
o Remove coil mounting bolts. Pull coils up and off spark plugs
• Remove spark plugs
• Installation is reverse of removal, bearing in mind the following:
o Lightly lubricate new spark plug threads with copper-based anti-seize compound
o Thread plugs into cylinder head by hand to prevent cross-threading
o Be sure to reinstall and tighten coil grounds
Tightening torque:
Spark plug to cylinder head (25 Nm or 18 ft-lb)

Spark plugs are gapped to 0.7 mm (0.028 in) by the manufacturer and are not adjustable
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