Thanks for this addition. That is great info, and I am sure others will benefit from this.
I see the original response did not contain a lot of detail, so I am going to attach a little bit more.
Rusted plugs is not uncommon on vehicles that are kept outside or in high humidity environments. Also, it is common when they are not changed on a regular basis.
So clearly it is important to change the plugs when they are supposed to be changed because if the threads get rusted then it is very difficult to remove them.
https://www.2carpros.com/articles/how-to-tune-up-a-car-engine
I am attaching some pictures and charts that will help with determining possible causes of plug damage. This first chart is for the tip of the plug and the second picture shows normal rust that can happen on a plug that has not been changed in a while.
Please let us know if we can assist any further.
Thanks again.
Images (Click to make bigger)
Sunday, June 12th, 2022 AT 9:06 AM