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Home › Ford › 2003 › Cutaway 7.3 F › Repair and Diagnosis › Engine Performance › System › Engine Controls - System & Component Testing - 7.3L Diesel › Engine Performance Diagnostic Procedures › Test 13: Exhaust Restriction › Possible Causes

Possible Causes

Collapsed tail pipe.
Clogged tail pipe.
Closed exhaust back pressure device.
Clogged catalytic converter.
Damaged muffler.