Spark Plug: Service and Repair
Spark Plugs, Removing and Installing
=> [ Spark Plugs, 2.0L FSI and 2.0L TSI, Removing and Installing ]
=> [ Spark Plugs, 2.0L TFSI, Removing and Installing ]
=> [ Spark Plugs, 2.0L SRE Gasoline, Removing and Installing ]
=> [ Spark Plugs, 2.5L SRE Gasoline, Removing and Installing ]
Special tools, testers and auxiliary items required
• Spark plug wrench (3122 B)
• Torque Wrench (V.A.G 1331)
• Puller (T40039)
• Puller (T10094 A)
• Puller (T10095)
• Removal/installation tool (T10029)
• Puller (T10112)
• Seal puller (T10118)
Spark Plugs, 2.0L FSI and 2.0L TSI, Removing and Installing
Removing:
Perform the following:
• To pull off spark plugs, place ignition coil puller (T40039) on topmost thick rib - arrow - of ignition coils with power output stages.
• If lower ribs are used, these can be damaged
- Remove engine cover.
Spark plugs are located under ignition coils with power output stages - 1 -.
- It may be necessary to loosen the wiring guide from the cylinder head cover.
• Note installation position of ignition coils with power output stages!
- Pull all ignition coils approximately 30 mm out of cylinder head in direction of arrow using ignition coil puller (T40039).
- Push connector in direction of ignition coils with power output stages, press catch down by hand and disconnect connectors - arrows -.
- Remove spark plugs using spark plug wrench (3122 B).
• Spark plug identification and tightening specification, refer to => Engine Mechanical, Fuel Injection and Ignition 28 Specifications
• Observe waste disposal regulations!
Installing
- Install new spark plugs using spark plug wrench (3122 B).
• Lubricate the ignition coils with spark plug grease (G 052 141 A2) whenever installing new spark plugs.
• New ignition coils are delivered already lubricated. It is not necessary to lubricate them again.
- Apply a thin bead of spark plug grease (G 052 141 A2) all around the sealing hose on the ignition coil - arrow -. The bead must be 1 to 2 mm thick.
- Guide ignition coils with power output stages into cylinder head.
- Align ignition coils with power output stages into designated recesses of cylinder head cover.
- Connect all the connectors to the ignition coils - arrows -.
- Push the ignition coils with power output stage - 1 - all the way onto the spark plugs by hand. They must engage audibly.
- If necessary, attach the wiring guide to the cylinder head cover.
- Install engine cover.
Spark Plugs, 2.0L TFSI, Removing and Installing
Removing:
Perform the following:
• To pull off spark plugs, place ignition coil puller (T40039) on topmost thick rib - arrow - of ignition coils with power output stages.
• If lower ribs are used, these can be damaged
- Remove the engine covers.
Spark plugs are located under ignition coils with power output stages - 1 -.
- It may be necessary to loosen the wiring guide from the cylinder head cover.
• Note installation position of ignition coils with power output stages!
- Pull all ignition coils approximately 30 mm out of cylinder head in direction of arrow using ignition coil puller (T40039).
- Push connector in direction of ignition coils with power output stages, press catch down by hand and disconnect connectors - arrows -.
- Remove spark plugs using spark plug wrench (3122 B).
• Spark plug identification and tightening specification, refer to => Specifications
• Observe waste disposal regulations!
Installing
- Install new spark plugs using spark plug wrench (3122 B).
• Lubricate the ignition coils with spark plug grease (G 052 141 A2) whenever installing new spark plugs.
• New ignition coils are delivered already lubricated. It is not necessary to lubricate them again.
- Apply a thin bead of spark plug grease (G 052 141 A2) all around the sealing hose on the ignition coil - arrow -. The bead must be 1 to 2 mm thick.
- Guide ignition coils with power output stages into cylinder head.
- Align ignition coils with power output stages into designated recesses of cylinder head cover.
- Connect all the connectors to the ignition coils - arrows -.
- Push the ignition coils with power output stage all the way onto the spark plugs by hand. They must engage audibly.
- If necessary, attach the wiring guide to the cylinder head cover.
- Install engine cover.
Spark Plugs, 2.0L SRE Gasoline, Removing and Installing
Perform the following:
Removing
- Remove connectors from fuel injectors at the first and fourth cylinders.
- Remove the spark plug connectors using the puller (T10112).
- Remove spark plugs with spark plug wrench (3122 B).
• Spark plug identification and tightening specification, refer to => Specifications
• Observe waste disposal regulations!
Installing:
- Install new spark plugs using spark plug wrench (3122 B).
- Connect spark plug connectors using puller (T10112).
- Position fuel injection valve connector.
- Check fuel injector valves, spark plug wires and connectors for secure seating.
Spark Plugs, 2.5L SRE Gasoline, Removing and Installing
Removing:
• To pull off spark plugs, place ignition coil puller (T40039) on topmost thick rib - arrow - of ignition coils with power output stages.
• If lower ribs are used, these can be damaged
- Remove engine cover.
Spark plugs are located under ignition coils with power output stages.
- Remove the connector - 1 - with the assembly tool (T10118) in direction of arrow.
• It is necessary to pull off the connector so that afterwards the ignition coils with power output stages with connected wires can be set aside without disturbing the routing of the wiring!
- Remove all the ignition coils with power output stage - 1 - using the ignition coil puller (T40039).
• When pulling out ignition coils with power output stages, the wiring and connectors for ignition coils can remain connected.
• Note installation position of ignition coils with power output stages!
- Carefully move the ignition coil with power output stage, with the wires still connected, to the side.
Be careful to not kink or damage the wiring.
- Remove spark plugs using spark plug wrench (3122 B).
Installing
• When replacing spark plugs, coat the ignition coils (ignition coil with power output stage) with G 052 141 A2. This will prevent the rubber hose from burning to the ceramic.
- Screw in new spark plugs using spark plug removal tool (3122 B) and tighten to 20 Nm.
- Apply a thin bead of spark plug grease (G 052 141 A2) all around the sealing hose on the ignition coil - arrow -. The bead must be 1 to 2 mm thick.
- Install the ignition coils with power output stage into the cylinder head and then align them with the openings in the cylinder head cover.
- Press the ignition coils with power output stage all the way onto the spark plugs until they audibly engage.
• Make sure that the wire routing of the ignition coils with power output stages is correct.
- Install engine cover.