Recommended replacement interval for the part category Spark plug : 4 year / 60000 km

Important!

This replacement procedure can be used for:
TOYOTA Yaris Hatchback (_P9_) 1.3 4WD (NCP92_), TOYOTA Yaris Hatchback (_P9_) 1.3 VVT-i (NCP90_), TOYOTA Yaris Hatchback (_P9_) 1.8 VVTi (KVP91), TOYOTA Yaris Hatchback (_P9_) 1.5 (NCP91_) … View more

The steps may slightly vary depending on the car design.

How to change spark plug on TOYOTA YARIS Mk2 [TUTORIAL AUTODOC]

All the parts you need to replace – Spark Plug for Yaris Hatchback (_P9_) and other TOYOTA models

Spark plug

        Spark plug for Yaris II Hatchback (XP9) Petrol (87 hp)
      
        Spark plug for Yaris II Hatchback (XP9) Petrol (86 hp)
      
        Spark plug for Yaris II Hatchback (XP9) Petrol (132 hp)
      
        Spark plug for Yaris II Hatchback (XP9) Petrol (109 hp)

Replacement: spark plugs – Toyota Yaris Mk2. List of the tools you'll need:

                        Electronic spray
                      
                        High-temperature anti-seize lubricant
                      
                        Torque wrench
                      
                        Drive socket # 10
                      
                        Spark plug socket # 16
                      
                        Ratchet wrench
                      
                        Microfibre towel
                      
                        Fender cover

Buy tools

Replacement: spark plugs – Toyota Yaris Mk2. Tip from AUTODOC:

The replacement procedure is the same for all spark plugs.
Please note: all work on the car – Toyota Yaris Mk2 – should be done with the engine switched off.

Carry out replacement in the following order:

Step 1

Open the bonnet.
Step 2

Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.
Step 3

Release the air filter cover clips.
Step 4

Disconnect the air intake pipe from the air filter housing.
Step 5

Take off the filter lid.
Step 6

Cover the air intake hose with a microfibre towel to prevent dust and dirt from getting into the system.
Step 7

Clean the ignition coils.
Step 8

Unscrew the fasteners of the wiring harness bracket. Use a drive socket #10. Use a ratchet wrench.
Step 9

Remove the fastening bolts.
Step 10

Remove the oil dipstick.
Step 11

Move the wiring harness bracket aside.
Step 12

Insert the oil dipstick.
Step 13

Unplug the connectors from the ignition coils.
Step 14

Unscrew the fasteners of the ignition coils. Use a drive socket #10. Use a ratchet wrench.
Step 15

Remove the fastening bolts.
Step 16

Take out the ignition coils from the spark plug wells.

Replacement: spark plugs – Toyota Yaris Mk2. Professionals recommend:
Remember the sequence of steps for ignition coil demounting.
Step 17

Clean dirt, dust and debris from inside the spark plug wells.
Step 18

Unscrew the spark plugs. Use the spark plug socket #16. Use a ratchet wrench.
Step 19

Take out the spark plugs.
Step 20

Apply a thin layer of a special high temperature anti-seize lubricant to the threads of the new spark plugs.
Step 21

Install the new spark plugs into their mounting seats.

Replacement: spark plugs – Toyota Yaris Mk2. Tip from AUTODOC experts:
Lower the spark plugs into the wells carefully, making sure not to damage the electrode gap.
Step 22

Screw new spark plugs and tighten them. Use the spark plug socket #16. Use a torque wrench. Tighten it to 18 nm torque.

Replacement: spark plugs – Toyota Yaris Mk2. Tip from AUTODOC:
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 23

Install the ignition coils to the spark plug wells.
Step 24

Install the fastening bolts.
Step 25

Tighten the ignition coil fasteners. Use a drive socket #10. Use a torque wrench. Tighten it to 9 Nm torque.
Step 26

Treat the ignition coil connector with electronic spray. The spray will protect the electrical contacts from corrosion, oxidation, and will reduce the contact resistance.
Step 27

Plug in the connectors of the ignition coils.
Step 28

Remove the oil dipstick.
Step 29

Reinstall the wiring harness bracket.
Step 30

Insert the oil dipstick.
Step 31

Install the fastening bolts.
Step 32

Tighten the fasteners of the wiring harness bracket. Use a drive socket #10. Use a torque wrench. Tighten it to 9 Nm torque.
Step 33

Clean the air filter cover and housing.
Step 34

Remove the microfibre towel from the air intake hose.
Step 35

Connect the air intake pipe to the air filter housing.
Step 36

Reinstall the air filter cover. Fasten it.
Step 37

Press the air filter cover clips into place.
Step 38

Run the engine for a few minutes. This is necessary in order to make sure that the component operates properly.

Step 39

Shut off the engine.

Step 40

Remove the fender protection cover.
Step 41

Close the hood.

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