Forgot to mention,
pick up a small tube of Di-Electric grease. When you are ready to install the new coils, take a dime size of this Di-Electric grease on your fingertip and shove it down the end of the boot. The end which you'd push down the well first, the part that seals the spark plug. This will act as a plug-to-boot sealant and keep dust/dirt/contaminates out. Ensures a nice clean contact for the top of the spark plug to the spring of the coil. Good clean solid connection from Coil to Plug.
Another thing, at the very back of the coil covers, you'll notice the main harness for the coils going in. When you redo this all, you'd want to add a little black
silicone gasket maker at that bridge so as to seal it all up and protect it from anything water related to get back in there. OEM factory from the assembly plant had done so as well. You'd just need to redo it a bit.
You can see the white/beige inline gasket when you flip the coil covers upside down. At the back towards the firewall, you'd note where the Main Coil harness comes in. We'd want ensure we're all sealed up when the covers go back on.
Do not crank the shit out of the coil cover bolts. Hand tight then a quarter turn to the right. These are not something that can even stand over-torquing, it will pull the downfastened nut loose and rotate it. Then you have to deal with that and it's not needed. Just gently tighten the coil cover hardware. It's only a plastic cover with an inlay gasket that just needs to keep the coils dry and clean. Easy does it.
- Spark plugs
Joe already mentioned this.
Yes - they tend to come pre-gapped when you buy them but don't always trust this concept.
You'd have to be about as dumb as a rock if you just blindly installed plugs without taking a few extra minutes, using feeler gauges and verifying the gap. You'll find, they are out slightly and could always use an adjustment to get them all the same.
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Myself I'd even tighten them up just a touch past recommended spec.
It calls for 1.0mm gapping. I'd go 0.975-.980mm (a bunny pubic hair or two less)
As the plug ages the gap from the ground to centre electrodes wears down and widens the gap.
Keeping the gap tight ensures a good solid park as it wears out over the years.
- Coil connector wiring clips
GENTLE with these things, they've become brittle somewhat while encased inside a cover with all that excessive engine heat cycling over the years. Be sure to handle them gently or they will break instantly. A little Di-Electric grease inside the connector wouldn't hurt either. Ensure you hear/feel the click when you put each one back onto the coils. GENTLE !!!
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