Dodge RAM 1500 1998 Owner's Manual page 1461

9 - 238 ENGINE 5.9L DIESEL
ENGINE 5.9L DIESEL (Continued)
POSSIBLE CAUSE
Dirty air cleaner or restricted turbocharger intake duct.
Air leak in boost system between turbocharger
compressor outlet and intake manifold.
Obstruction in exhaust manifold.
Restricted turbocharger drain tube.
Crankcase ventilation system plugged.
Valve seals are worn, brittle, or improperly installed.
Valve stems and/or guides are worn.
Broken or Improperly installed piston rings.
Excessive piston ring end gap.
Excessive cylinder bore wear and taper.
Cylinder damage.
Piston damage.
Turbocharger failure.
EXCESSIVE BLUE SMOKE
Check Filter Minder at air filter housing. (Refer to 9 -
ENGINE/AIR INTAKE SYSTEM/AIR CLEANER
ELEMENT - REMOVAL).
Service air charge system..
Remove exhaust manifold and inspect for blockage
(Refer to 9 - ENGINE/MANIFOLDS/EXHAUST
MANIFOLD - REMOVAL).
Remove turbocharger drain tube and remove
obstruction.
Inspect crankcase ventilation system for function
Replace valve stem oil seals (Refer to 9 - ENGINE/
CYLINDER HEAD/INTAKE/EXHAUST VALVES &
SEATS - REMOVAL).
Remove valves and inspect valves and guides. (Refer
to 9 - ENGINE/CYLINDER HEAD/INTAKE/EXHAUST
VALVES & SEATS - STANDARD PROCEDURE).
Tear down engine and inspect piston rings.
Remove pistons and measure piston ring end gap
(Refer to 9 - ENGINE/ENGINE BLOCK/PISTON RINGS
- STANDARD PROCEDURE).
Remove pistons and measure cylinder bore wear and
taper (Refer to 9 - ENGINE/ENGINE BLOCK -
STANDARD PROCEDURE).
Remove pistons and inspect cylinder bore for cracks or
porosity. Repair with cylinder liner if necessary. (Refer
to 9 - ENGINE/ENGINE BLOCK - STANDARD
PROCEDURE).
Remove pistons and inspect for cracks, holes. Measure
piston for out-of-round and taper (Refer to 9 -
ENGINE/ENGINE BLOCK/PISTON & CONNECTING
ROD - INSPECTION).
(Refer to 11 - EXHAUST SYSTEM/TURBOCHARGER
SYSTEM/TURBOCHARGER - INSPECTION).
CORRECTION
DR