Changing the spark plugs - BMW 118i

The 4 spark plugs are located under the engine cover

Start by removing the 6 screws from the cabin filter box using an 8 mm socket wrench.

Once the 6 screws are removed, remove the cabin filter box

Remove the protective cover from the brake fluid reservoir by removing its 3 hooks

Repeat on the opposite side

Remove the air sensor from its base by rotating it 90° then pulling on it

Remove the screw present on both sides of the windshield bay using the 8 socket wrench.

Shift the guide to clear the windshield bay

Remove the beam support by simply pulling on it

Unhook the bundle sheaths by pulling on them

Using a ratchet and a Torx E14 socket, loosen the screw on the reinforcement bar.

Open the engine oil filler cap and remove it by pulling on it

Lift and gently pull on the engine cover then raise the bar to facilitate passage

To remove the coils, lift the tab to disconnect it, then turn the coil while pulling upwards.

Once the 4 coils are removed, using a ratchet , a long extension and a 16 spark plug socket, unscrew the spark plug.

Remove the spark plug from the socket

Compare the dimensions of the new spark plugs with the old ones

Place the new spark plug on the socket and remove the paper protection

Insert the spark plug into its well carefully and screw it back in using the ratchet , the long extension and the 16 spark plug socket.

Repeat the operation on the other 3 candles

Replace the coil on the spark plug and lock it

Repeat the operation on the other 3 coils

Replace the engine cover respecting the 2 guides

Slide the engine cover under the beam supports and the reinforcement bar

Replace the engine oil filler cap following the guides

Replace the reinforcement bar and its screw

Tighten the screw using the ratchet and a 14 Torx socket.

Replace the two beam supports

Replacer for the windshield bath

Replace the hook on both sides of the windshield bay

Repeat the operation

Replace the screw at both ends using an 8 mm socket wrench.

Replace the air sensor in its base

Rotate the sensor 90° to lock it

Replace the cabin filter box

Replace the 6 screws using the 8 mm socket wrench.

Replace the covers at each end by locking the 3 hooks

Repeat the operation