Car won't start due to stripped timing chain gears on Ford F-150

The gears for the timing chain can strip, causing the engine to crank but not start.
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Average mileage: 160,000 (160,000–160,000)
Engine affected: 4.9L 6 Cylinder
7 model years affected: 1990, 1991, 1992, 1993, more1994, 1995, 1996
8 people reported this problem
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problem details
1990 Ford F-150 - 4.9L 6 Cylinder 160,000 mi,
Same issue with mine. Tap it with a happier every once and a whole when it won't start