I bought a used engine (AEIO 360 B1H) with about 150 hrs a little while ago. The seller told me that he found some metal shavings in the screen, suggested that cam and lifters may be damaged. Pulled #3 cylinder and cam and lifters are in good condition. Pulled #2 and possibly found the culprit. Actually, I found two of the push rods have similar marks. Replaced all the shrouds even with a hint of damage. I am hoping this is what created metal shavings.
While it looks somewhat bigger in the picture, the dent in the shroud is barely visible.
While it looks somewhat bigger in the picture, the dent in the shroud is barely visible.