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Home >> BMW >> 2017 >> X6 M >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Electric Motor Systems >> Engine Electrical System -- Repair X6 M (F86) >> 12 12 Ignition Wire, Spark Plugs >> Removing and installing/replacing all spark plugs (S63 B44 T 2) (X6 M)

Removing and installing/replacing all spark plugs (S63 B44 T 2) (X6 M)

Special tools required: 

Necessary preliminary work: 

IMPORTANT: Wear safety goggles. Oil and dirt particles may get into your eyes! 

Clean spark plug slot with compressed air  .

  1. Remove contamination from the spark plug shaft. Clean the plug shaft with compressed air after the ignition coils have been removed, but before the spark plugs are removed. After having removed the spark plugs, once again check the sealing surfaces for contamination and (if necessary) clean with a damp cloth or once again using compressed air.
    NOTE: Deposits that are not removed according to instructions may enter the combustion chamber and lead to uncontrolled combustion. Remaining deposits on the spark plug sealing surfaces may lead to leaks and the spark plugs may come loose during engine operation.
  2. Do not grease/oil the thread, i.e. no graphite or copper paste. Adhere to the torque values of the packaging information or regulation.
NOTE: If these instructions are not followed, especially with regard to greasing, this may result in mechanical damage to the spark plug housing/thread. Spark plugs that are not tightened sufficiently lead to leaks and to the spark plugs coming loose during engine operation.

Removal: 

Unscrew spark plugs with special tool 12 1 220 and an extension with joint.

Flexible ratchet extensions must always be used. If rigid mounting tools are used, there is a risk of insulator breakages.

Also do not use a variable plug connection with locking capability as this also poses a risk of insulator breakages.

G10102127Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew spark plugs with special tool 12 1 220 and an extension with joint.

G14932838Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Insert spark plug (1) into the special tool 12 1 230.

G10102129Courtesy of BMW OF NORTH AMERICA, INC.

Do not let spark plugs fall into the spark plug shaft. This can lead to a reduction of the electrode gap and so impair the smooth running of the engine, especially in idle mode.

First screw in spark plug using special tool 12 1 230 in the engine and tighten by hand.

Then tighten spark plug with torque wrench, special tool 12 1 220 and extension with joint.

G14932840Courtesy of BMW OF NORTH AMERICA, INC.

Flexible ratchet extensions must always be used. If rigid mounting tools are used, there is a risk of insulator breakages.

Also do not use a variable plug connection with locking capability as this also poses a risk of insulator breakages.

Tighten spark plug with torque wrench, special tool 12 1 220 and extension with joint.

Observe tightening torque.

Tightening torque 12 12 1AZ .

G14932838Courtesy of BMW OF NORTH AMERICA, INC.

Required follow-up work: 

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