One problem related to engine has been reported for the 1998 Ford F-250. The most recently reported issues are listed below.
Spark plug number four had blown out of head, consumer managed to get vehicle to a mechanice and was informed that head was made of aluminum and engine was made of iron, this is what caused the spark plugs to blow, right head was replaced for a total cost of $1900, partial reimbursement ws given to consumer.