Looking for info on changing spark plugs on 2003 WRX 2.0 Turbo I need to replace the plugs, but not much info in owners manual. The owners manaul advises "take to the dealership" for this, so gives no info. Any help appreciated.
You could try this. Not an 03, but should be very similar http://www.iwsti.com/forums/showthread.php?t=29929&highlight=spark+plug
Pull the battery, washer bottle, and factory intake (if you still have it) and go for it. With all of that out of the way it is actually quite easy.
I did a huge write up that details the process very well Edit http://www.wrxatl.com/forums/showthread.php?t=2643&highlight=spark+plug
I like doing everything myself. Thats why I live at scoobymods.com. They have two different tutorials on the spark plug change, http://www.scoobymods.com/forums/showthread.php?t=511. I would definitely suggest a swivle head ratchet. You have to register to see the pictures.