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lynx
@Dammit
And, on a different note, they need to drop the engine to change the AOS as the bolts are too corroded to get the unit off with the engine in place, god-fucking-damnit.
Still, the borescope and leakdown tests seem to indicate that we're ok:
LD= Leak Down Compression
Cylinder 1 4% LD 100PSI
Cylinder 2 2 % LD 98PSI
Cylinder 3 4% LD 105%
Cylinder 4 6% LD 100%
Cylinder 5 6% LD 90%
Cylinder 6 2% LD 90%
So that's the engine rebuild off the menu, likely to have been a hydraulic lifter taking a few seconds to pump up, so there's that.