Quote:
Originally Posted by elgyqc
I have been inspecting my cylinders and pistons with a borescope, but when I tried to do #1 (right side front) I saw this.
Looks like a washer, the hole in the middle is big enough for the plugs electrode to pass. Is this normal?
The rest of the holes look like this, which is what I would expect.
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I note that the threads in #1 look much cleaner than the threads in the other hole without the "gizmo", so if we take the theory that it is to stop oil, it appears to have worked...
Never saw anything like it, and now I want to know what it is...