Two problems related to engine turbo-charger have been reported for the 2003 Ford F-350. The most recently reported issues are listed below.
While driving the turbo hose to the turbo charger continuously blew off. Consumer experienced this problem several times. Took vehicle to dealer to be repaired. However, problem recurred.
Excessive black smoke and lack of power on acceleration. Fuel economy is way down. I took the pickup to sierra Ford in bishop CA. They kept the pickup for two days and did not have the parts to fix the pickup, in fact they had to take parts off a different pickup and put them on mine for me to get home to fresno CA. I took the pickup to freedom Ford to be fixed when I got home . Both dealers said the turbo was bad.