1
Introduction
- Open your car's engine hood using the lever located at the bottom left of the dashboard, near the pedals.
- Locate and then disconnect the car battery.
Replacement spark plugs on the Peugeot 306
This tutorial will help you remove and replace the spark plugs on a Peugeot 306 1.8 16V petrol engine.
Cleaning the spark plugs is recommended if starting is difficult when warm or if idling seems unstable. In fact, a dirty spark plug produces a weaker spark, or in some cases, no spark at all.
The lifespan of a spark plug varies between 30,000 and 60,000 km, depending on the make and use of the vehicle.
Tools (4)
Parts (1)
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Step-by-step instructions
2
Ignition Coil Connector (Part 1)
- Identify the ignition coil pack connector, located on the top right of the engine cover.
3
Ignition Coil Connector (Part 2)
- Press the locking rod near the bottom to release the connector.
- Disconnect the ignition coil connector.
4
Remove the ignition coil pack (Part 1)
- Locate the six H4 screws on the ignition coil pack.
- Use an H4 (or T30) screwdriver to unscrew the six screws.
5
Remove the ignition coil pack (Part 2)
- Grip the ignition coil pack on both sides and pull it directly upwards to remove it.
6
Disassemble the spark plugs
- Locate the four spark plug chambers.
- Grab a spark plug wrench (size 16mm).
- Insert the wrench into the first spark plug chamber until you reach the bolt.
- Certain spark plug wrenches are equipped with a rubber joint to help with extracting the spark plug. It is therefore necessary to apply light pressure to correctly reach the spark plug's bolt.
- Unscrew the first spark plug, and remove it from its chamber.
- Continue in the same manner for the other three spark plugs.
7
Clean and replace the spark plugs
- You can now proceed to clean or replace the spark plugs.
- The cleaning of a spark plug can be done with contact cleaner and a brass brush.
- To reinstall the spark plugs, repeat this procedure in reverse.
- When reinstalling, be sure to rest the spark plug as straight as possible to align the thread axes of each spark plug. The recommended tightening torque is 29Nm (21.4 lbft)
Conclusion
To reassemble everything, follow the instructions in reverse order.
Guide content belongs to iFixit, license CC BY-NC-SA. Open original