It's easy to change spark plugs - the only one that's really a pain is the #1 (very front) underneath the AC Compressor.
You need a ratchet handle, a 5/8" sparkplug socket (it's a deep socket with a rubber grommet that holds the plug for you,) a universal joint (comes in handy for #1 and #6) and a 6" extension (comes in handy for #1.)
When you disconnect the spark plug wire, grab it BY THE BOOT ONLY and twist before you remove it - they tend to get a little stuck, and that helps to free it. If you pull by the wire, you stand a good chance of pulling the wire out of the boot, the boot will still be stuck on the plug, and you'll have to pull it off and shove the wire back thru it.
Work them ONE AT A TIME so you don't get the wiring mixed up.
I always use a little never-seez on the threads so they won't sieze later (which really sucks!) and a little dielectric grease around the inside of the plug boot opening to help keep the boots from sticking.
The whole job, if you're not in a hurry, can usually be done in a half-hour without having to tear anything apart (I think I've got it down to a little under 10 minutes - and I'm still not in a hurry.)
There are plenty of us down in SoCal (check the chapter. I'm up in San Jose, or I'd help) who would probably give you a hand for a beer or so - check around. $100 for plugs is ridiculous.
One of the best things you can do for yourself is learn to do at least tune-ups and minor repairs, if you don't know how to already. You can learn from us (many of us have gotten quite good at this...) or check around your local community colleges - most of them have at least basic automotive courses. A lot of those also have degree/certificate programmes, which might also be worthwhile (which is what I'm doing now. I've been doing automotive work since I was seven, I just need the paperwork and ASE certs now...)
Just knowing how to do tuneups and oil changes can save you a fortune over the years...
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