In Reply to: F150 4.6 timing chain pics posted by lonestarjeff on December 21, 2018 at 00:24:51:
I replaced a Windsor timing belt in my wife's 2004 with about 200,000 miles. The reason was the upper guide broke at the slide bolt. The tensioner took up the slack, and the timing was effected and eventually the catalytic converter clogged and the engine quit. The repair took a couple weekends. My recommendations is to chase the threads for the valve covers. My regret is that I did not replace with a short block, the engine following used oil through the valves or rings, and a short block was cheaper that the time gear parts, water pump, gears, tensioners, etc.