Yes it has to come off to get your socket around the spark plug. It should have come out when you pulled off the coil. Get some needlenose pliers to reach in and grab it. Use silicon grease to coat the inside next to spark plug when you put it back on to keep that from happening again.
The rubber end on the spark plug wire.
That is the rubber boot that is on the end of the spark plug wire that goes onto the spark plug.
The word 'welly' is short for Wellington boot - a rubber boot which usually comes to just below the knee.
Firstly, you remove the old spark plug after removing the rubber boot that protects it, then insert the new one, and put the rubber boot back on it. who ever wrote this answer probably knows nothing of the 2.4 twin cam engine , its not just pulling a plug wire with the rubber boot , you have to pull the coil pack off and the plugs are under there!!
The spark plug boot? yeah sum say coil wire , but its actually the coil to spark plug boot. KongKit
Generally, to replace spark plugs on a Subaru vehicle, the spark plug boot should be removed. Then, the old spark plugs should be removed using a socket wrench, and replaced with new ones.
This vehicle uses Coil ON Plug ignition coils. So you have to remove the coil and the rubber boot to get to the spark plug
It does not matter if the wires are broken. U never pull the wire to get the rubber boot off the plug. U have to just pull them off by hand and to put the new rubber boot on the plug U have to put it on by hand and make sure the boot snaps on the plug. U will hear a click then U will know the boot in on the plug.U have to do all this by feel U might have to remove some parts just so u can get your arm up in there
The boot is the rubber cover The boot is the accorion-folded rubber shroud that fits over the ball joint,
Plugs are in the top of engine I think that's obvious well anyway pull and twist a little on the boots carefully by the boot not the wire, you will need I believe a 7/8 spark plug wrench. if you don't have a spark plug wrench(with rubber boot built inside the socket) you will have a problem getting the spark plugs out,that is once they are unthreaded.
Give the spark plug boot a twist to free it from the spark plug then pull it off of the spark plug by the boot.
If you mean that the wire came out of the boot, then pull the boot off of the spark plug and use a spark plug socket to remove the spark plug.