2002 Toyota Camry cle 3. L v6

Try this quick test. Disconnect ALL 6 ignition coils. Replace the fuse and crank the engine over. Did the fuse blow again?

Did unplug all coils no blown fuse so I one at a time plugeach one in turning the key to on until I got to the last one which of course was the hardest on backside of ENGINE once I plugged back in the fuse popped. So pulled out coil it took an hour it was fried at the boot . Somehow the plug worked its way out all the way and everything just melted never seen anything like it . So got plug and trash out went to put new plug in and now new issue can't get it to thread in any ideas on getting threads to catch thanks

So...does it appear that the spark plug hole in the cylinder head has bad threads...thus you are unable to thread in the new SP? If yes...you will need to buy a ....tap.....which is correct for the spark plug thread size and attempt the restore threads in the head. This cpuld be tricky. The tap has to straight and square with the SP hole. Use a little grease to capture the metal residue being removed. We usually use electrical tape to secure a socket and extension to the tap and then a ratchet to facilitate the repair.

I have a snake camera will inspect today LOOKING with mirror they look ok I was afraid u would suggest a tap that's going to be fun thank you for ur help

Ok tried retapping threads but they are waisted not sure how but nothing seems to work threads look like for the most part thin or gone thinking about drilling out and installing helicoil the question is is there anything else that can be done before I attempt helicoil and if I install helicoil should I pull head thanks

Well......there seems to be a SP hole repair kit which uses an INSERT rather than a Helicoil. The damaged hole is taped with a tap that is included in the kit. The insert is installed on the new SP. and coated with a cement. The insert and SP are installed in the fresh SP hole threads and allowed to set. Interesting idea. might work.

Update I used a sp repair kit worked great put it back together new coil new plug put altogether had bad miss. Trouble code came up #3 misfire the same issue pulled coil pulled plug plug looked fine put back in switched new coil with old coil new code #4 misfire that is new location new coil . Bad new coil returned coil got newest coil installed code gone all is great . Thank you for your help

Ok good job. Nice diagnosis technique. Keep in touch.

Btw....which SP hole repair kit did you use?

I bought it at advanced auto because of the valve cover the spark hole being down so deep I had to grind the outside of tap to fit spark socket . I also put electrical tape to hold it to inside of spark socket . Used lots of Vaseline on threads to catch chips I will get name of product it was very simple

Notice from pic the seize of the 2 spark they are exact spark also end of coil

Mushroom I still don't understand what happened but it runs great now knock on wood

Ok...nice job. Thanks for the photos and update. We all learned something from this event.