LEMON Manuals
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Ford
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2003
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Excursion 7.3 F, RWD
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - System & Component Testing - 7.3L Diesel
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Engine Performance Diagnostic Procedures
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Test 13: Exhaust Restriction
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Possible Causes
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Possible Causes
Collapsed tail pipe.
Clogged tail pipe.
Closed exhaust back pressure device.
Clogged catalytic converter.
Damaged muffler.