I'm having some problems with my 2002 Protege5 (see this thread: http://www.msprotege.com/forum/showthread.php?t=123701316) and I've decided my next move is to give the car a tune up. I bought the car with just under 50k miles on it, and it now has 88.5K miles. I have no idea if the local dealer I bought it from changed the plugs and wires before I bought it, but since it has been about 40k miles since I bought it anyway I figure it is a good idea to do it now. However, I've never done this kind of work on my car. I change the oil myself, but that is about the extent that I have gone. This car is just a daily driver, and I am no mechanic. Can somebody give me a "how-to" on this subject? I've seen the sticky about which plugs and wires to get. Do the plugs come pre-gapped? Honestly, I'm not even sure what "gapping" means, so if you could explain it to me I'd appreciate it. Sorry for the noob thread, but I could really use your help.