Recommended replacement interval for the part category Spark Plug : 18 month / 30000 km

Important!

This replacement procedure can be used for:
BMW 3 Saloon (E46) 318 i

The steps may slightly vary depending on the car design.

How to change spark plug on BMW 3 E46 TUTORIAL | AUTODOC

Replacement: spark plugs – BMW E46. List of the tools you'll need:

                        High-temperature anti-seize lubricant
                      
                        Spark plug socket # 16
                      
                        Ratchet wrench
                      
                        Torque wrench
                      
                        Round-nose pliers
                      
                        Fender cover

All the parts you need to replace – Spark Plug for 3 Saloon (E46) and other BMW models

BMW 3 Saloon (E46) 318 i

Replacement: spark plugs – BMW E46. AUTODOC recommends:

The replacement procedure is the same for all spark plugs.
All work should be done with the engine stopped.

Replacement: spark plugs – BMW E46. Use the following procedure:

Step 1

Open the bonnet.
Step 2

Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.

Step 3

Remove the spark plug wire connectors from the spark plug wells.Use round-nose pliers.

Replacement: spark plugs – BMW E46. Professionals recommend:

Be careful to avoid damaging spark plug wires.Remember the sequence of the spark plug wires connectors.
Step 4

Unscrew the spark plugs. Use the spark plug socket #16.Use a ratchet wrench.
Step 5

Take out the spark plugs.
Step 6

Apply a thin layer of a special high temperature anti-seize lubricant to the threads of the new spark plugs.
Step 7

Install the new spark plugs into their mounting seats.Use the spark plug socket #16.
Step 8

Screw new spark plugs and tighten them.Use the spark plug socket #16.Use a torque wrench.Tighten it to 27 nm torque.

Replacement: spark plugs – BMW E46. AUTODOC experts recommend:

Don't tighten the plugs with excessive force. Exceeding tightening torque can damage the thread connection. Be careful when working with a spark plug wrench. Its skewing can cause damage to the threaded connection.
Step 9

Install the spark plug wire connectors into the spark plug wells.Make sure you hear a click indicating that it is locked in place.

AUTODOC recommends:

Replacement: spark plugs – BMW E46. Follow the installation steps.
Step 10

Remove the fender protection cover.Close the hood.

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