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Actually, it [the rocker] relies on 3 points of contact at all times: valve, cam, and HLA. I don't see how oil pressure figures into keeping contact between the rocker end (at the HLA) and rocker roller (at the cam). Look at the diagram at the link in my previous post. There's a substantial...

I don't understand how low oil pressure could be the cause of the rocker arm falling off. If it was, wouldn't the rocker arm be likely fall off each time the engine is started, since oil pressure is essentially zero for the first turn of the camshaft? There's a drawing and explanation of what...