Salmon, think my truck has leak there too.
Do you get a ticking sound at idle, or sort of a diesel
sound when lauching from low rpm's?
( the rod bearings are fine, valves a bit out,
ticking sound under 1500 rpm )

Hugh

'86 SR-5 Extra-cab 4 x 4, 2" BL, 33 x 12.5 x 15R M/T on 15 x 8 rockcrawlers ( 3 3/4" BS ), 22RE 5 sp , 4.88's Detroit True-Trac front, V6 open rear, 24 mm Sway-Away + Rancho 5000's, removed sway bar, no-rust south US bed, Ramsey 8000 winch