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Spark plugs, replacing Audi A6 C5

Maintenance ~138 words

Spark plugs, replacing

WARNINGBe alert when working on or near the engine and ignition wires. High secondary ignition voltage can cause serious personal injury and damage vehicle components. DO NOT touch or disconnect ignition system wires when the engine is running or being cranked at starting PPM. DO NOT operate the starter if the fuel injectors have been removed. Be sure the ignition is switched OFF, when: Disconnecting ignition wires Disconnecting fuel injection system wiring Connecting or disconnecting test equipment leads Disconnecting the battery Washing the engine or engine compartment.
  1. Remove engine cover. See «ENGINE COVER, REMOVING»(/audi/a6/c5-1997-2001/remont/procedures/#maintenance__engine-cover-removing) .
CAUTIONAlways comply with disposal regulations.

Note. Spark plug identification

For 2.8L V6 AHA and ATQ, see TEST DATA, SPARK PLUGS .

or

For 4.2L ART, AWN or BBD, see TECHNICAL DATA, IGNITION .

or

For 4.2L (All Road BAS), see TECHNICAL DATA FOR IGNITION SYSTEM .

or

For 3.0L AVK, see TECHNICAL DATA .

or

For 2.7L Bi-Turbo APB and BEL, see TECHNICAL DATA, IGNITION SYSTEM .

  1. Pull out spark plug connectors (arrows).
  2. Remove spark plugs using 3122B spark plug removal tool. To remove left-rear spark plug, remove coolant expansion tank (without disconnecting hoses).
  3. Install new spark plugs using 3122B spark plug removal tool. Tightening torque for spark plugs: 30 Nm (22 ft lb)
  4. Install spark plug connectors.
  5. Check ignition wires and spark plug connectors for tightness of fit.