Changing the glow plugs on Renault Scenic 2 dci

The engine must be switched off

Unscrew the hose clamp then remove the hose.

Plug the intake ducts with a rag

Disconnect the 4 plugs by pulling upwards

Clean the spark plug ducts using a blower.

Loosen the 4 spark plugs with the spark plug wrench

Remove the spark plugs with pliers

Check the correspondence between the old and new glow plugs (thread, size, electrodes)

Lubricate the spark plug threads with the oil from the dipstick.

Screw the 4 spark plugs back in by hand then with the torque wrench

Reconnect the 4 plugs

Reconnect the hose by screwing the clamp back on.

Perform a test by starting the engine

Reposition the engine cover