With a rebuilt and running engine already in place the diagnostic work of Jerry’s friend, Bob Becker, deduced the leak was from a grooved harmonic balancer, a common issue on older Ford engines.

Question:I have a 1993 Ford F-150 with the 5.0-liter engine, E40D transmission, and four-wheel drive. The harmonic balancer is rattling loose on the crankshaft end. Is it pressed on? How do I ...