I have a 94 F-150 with a 5.0 and I'm having an overheating problem. I was driving along and looked behind me to see enough smoke to blind the cars behind me. So I tried changing the thermostat and flushing the radiator. It seemed fine a few days, then the problem occurred again. Only this time my bottom radiator hose busted. I got that changed thinking it may have been old and closed in on itself. Once again it drove fine a few days and now the same problem. Any ideas?
Maybe leaking only after several days. Pull and number the spark plugs, look for ones that seem to be steam cleaned. At least that will narrow it down to which side is leaking or hopefully not a cracked head or block.