Two problems related to engine exhaust system have been reported for the 2002 Ford E-350. The most recently reported issues are listed below.
Driving down a street at approx. 40mph I heard a bang and then a bunch of air escaping. Sounded like an exhaust leak. Spark plug was blown out of number 2 cylinder. Had repaired at local repair shop, put in a new heli coil. Since 7-6-09 has happened again. This time number 8 cylinder. These Ford engines don't have enough thread on the engine heads to hold the spark plugs in. It's probably going to keep happening until all of the threads are replaced.
2002 Ford e350 5. 4l spark plug #7 blow out. The average consumer would think that something was wrong with the exhaust system before ever knowing or expecting that compressed fuel was being pumped into the engine compartment from the exposed spark plug orifice. At the same time, the sparked plug coil wire is still active, combining a non-contained fuel / spark condition, possibly resulting in fire or explosion.