How to change spark plugs on FIAT 500 Hatchback (312) – replacement guide
FIAT 500 (312) 1.4 (312AXC1B, 312CXC1B), FIAT 500 (312) 1.2 (312AXA1A) … View more
The steps may slightly vary depending on the car design.
This video shows the replacement procedure of a similar car part on another vehicle
Spark plug
- The replacement procedure is the same for all spark plugs.
- All work should be done with the engine stopped.
- Step 1
Open the hood.
Step 2Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.
Step 3
Disconnect the air intake pipe from the air filter housing.
- Step 4
Undo the fastening screws of the air filter cover. Use a drive socket #10. Use a ratchet wrench.
- Step 5
Release the air filter cover clips.
- Step 6
Remove the air filter housing.
- Step 7
Cover the throttle body with a microfibre towel to prevent dust and dirt from getting into the system.
- Step 8
Remove the spark plug wire connectors from the spark plug wells. Use pincers.
Replacement: spark plugs – FIAT 500 (312). AUTODOC experts recommend:Be careful to avoid damaging spark plug wires.Remember the sequence of the spark plug wires connectors.
- Step 9
Clean dirt, dust and debris from inside the spark plug wells.
- Step 10
Unscrew the spark plugs. Use the spark plug socket #16. Use a ratchet wrench.
- Step 11
Take out the spark plugs.
- Step 12
Apply a thin layer of a special high temperature anti-seize lubricant to the threads of the new spark plugs.
- Step 13
Install the new spark plugs into their mounting seats. Use the spark plug socket #16.
- Step 14
Screw new spark plugs and tighten them. Use the spark plug socket #16. Use a torque wrench. Tighten it to 25 nm torque.
Replacement: spark plugs – FIAT 500 (312). AUTODOC recommends: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.
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