I searched the forum, and I didn't see this question, so I am posting it here.
I just installed Denso spark plugs, and after doing a test drive, I smell a plastic-type burning smell when I pulled back into the garage. The car ran smooth and idled well during the test drive.
I have changed spark plugs before with these exact brand spark plugs 45k miles ago, and I don't remember there being a burning smell with new spark plugs. The smell is not overwhelming, but I definitely noticed it when I got out of the car, and I didn't smell it inside the cabin - only when I got out.
I installed the spark plugs and I added dielectric grease to the connection from the ignition coil to the clip. The smell was not there before I changed the spark plugs.
2009 LX, 210k miles.
Any thoughts? Will this smell go away? Should I be concerned? Thoughts on what is going on?
Thanks in advance.