Changed the plugs to Bosch Platinum 4s this evening, and immediately after it wouldn't start and the hazards are on all by themselves. Previously I had gotten a misfire on 3 code. What happened and what do I do now?

(2000 Discovery II, 115k miles)

 

Reset the inertia switch on the firewall.
Little black button, passenger side, press it and hold for 3-5 secs.
Then try and start the truck.

 

Excellent, will try.

What if while trying to replace the new ones with the old ones to figure out which plug was having problems, I got the socket stuck on the plug? I mean stuck stuck. I can wiggle it a bit up and down, side-to-side, and loosen/tighten a hair. To me, this sounds very, very bad. What should I try when brute force has no effect? I'm fighting panic at this point.

 

If the plug socket is that stuck on the plug spray lube (Liquid Wrench, WD-40) whatever you have into the hole on the socket that the ratchet goes into.
Then wiggle the socket back and forth with the spark plug screwed in all the way.
You may need to use needle nose pliers to wiggle and pull the socket off.
One side of the pliers in the socket and the other on the outside gripping hard, wiggle and pull at the same time.

Worst case scenario take the plug back out and beat the socket on the cement and then get a new spark plug.

 

Excellent. WD40 and I are best friends now.

And I owe you a beer or two for the help! Now when I take it in for the service I already had scheduled tomorrow morning, at least the opening line won't be "And I have a piece of a tool stuck in my engine."

dylan

 

HAHAHA!!!

Seriously, kudos for working on your own truck. It's all downhill...er...easier from here