Update:
- I sucked the gas that was sitting atop of the pistons.
- Sprayed some Fogging oil in the holes, but when I sprayed #1 or #2, some white smoke came out of #4..... Head Gasket? Wouldn't it start though??
- Charged the battery to 100%, but the compression tester was not holding pressure; another time, another tester.
- Put all plugs back in, went to start it, and it was trying to start, but was occasionally stumbling, then just turning over.
- Took the brass ECTS out and swapped it with the polymer IAT. Went to start it and it stumbled, cranked normally for 3-4 seconds, then stumbled, then cranked normally.
When it cranks, it sounds totally normal.
So.
Think I'm going to pull the cam cover off and check it out while cranking.
Thoughts?? Bent Valves??
Thank you.