29-07-2022, 02:41 PM
It's good that the head and manifold have come off without breaking any studs or other woes. It will be easy to check whether the valves are sticking now that the head is off. Assuming they are all free I would replace the head and manifold and try the engine again. When replacing the head I would use a new gasket and give each side a very thin smear of Loctite 5920 copper silicone. Torque the head nuts down to 18 lb ft and then to 20 lb ft if the engine is okay.