Where are the spark plugs in a 2003 3.5l santa fe?

Answer 1

There may be an engine cover over the valve covers that is a big piece of plastic that may say Hyundai, or Santa Fe, I believe its three or four 10mm retaining nuts that hold it on, take that engine cover off, and there should be 3 wires in the top of each valve cover, those big wires are the spark plug wires, and they actually connect to the spark plug which is down inside the cylinder. To remove, you will need a 3/8 drive ratchet, a long extension, I would say 6-12 inches, long enough, but not too long, and a 5/8" spark plug socket. Take one of the spark plug wires out, and put your long extension with the spark plug socket on it down into the hole that the big wire came out of and you should find a spark plug at the end of the tunnel. :)