Is it possible for a spark plug head to round?

I went to change a plug and could not remove it.A regular 5/8 spark plug socket would not engage the plug,so using a snake flashlight to look at the exposed end of the spark plug it appears to be completely round....so the socket won't engage the plug.I then took the wire off the sparkplug next to it and it looks identically rounded and it won't engage either...



So is the plug just pushed down too far in the cylinder or is it rounded?I'm thinking it's possibly in far down enough the rounded edge i'm seeing is a different part of the plug above the 6 sided...That seems unlikely but who knows...How can I get the plug out?.... I have a 2000 Toyota Rav4 4 cylinderIs it possible for a spark plug head to round?
yes if someone used a cheap socket on it they will round off,you don't see it happening much these days but it can happen,if its in their that tight you will have a hard time removing it,especially with the head of it being rounded off,but its pretty rare these days to see that,sometimes sockets are to thick and wont grab on to the plug try a thinner wall socket that may get it out,good luck with it.Is it possible for a spark plug head to round?
I have never seen that. It's not round. The hex part is down in there somewhere.



It comes out the same way it went in, with the same wrench.Is it possible for a spark plug head to round?
go to the store and buy a set of plugs that fit your car.. and buy the plug socket that fits that plug.. you will find that you have to push down and turn and then you will feel it grab when you turn the socket.. i had that trouble on a renault.. i recomend a socket and extension and a universal.. with this you will be ok.. 3/8 set ok.Is it possible for a spark plug head to round?
You need to remove the air filter holder, you will then need to remove four holders from the center of the valve cover which are held in place with 10mm screws. You will then be able to get your 5/8 socket to fit.Is it possible for a spark plug head to round?
Sometimes the rubber insulator on the end of the spark plug wires can come off and stick onto the spark plug. Try taking a coat hanger, bend a small hook on the end of it, and then clip the wire off so there is a REAL small hook-see if you can hook onto the rubber down by the spark plug. happens here in the shop on a daily basis, worse with aftermarket spark plug wires. HINT-once you get it out, glue it back onto the plug wire insulator with yellow weatherstrip glue..Is it possible for a spark plug head to round?
possible dirt in the tube is preventing the socket from traveling down far enough? or is the socket not long enough, spark plug sockets come in 2 different lengths. either way, get a magnet to assist getting any dropped item from within the holes.