POSSIBLE CAUSES REMEDIAL ACTIONS
Clogged air filter element
Restrictions In air Intake duct to compressor Inlet
Restrictions in air outlet ducts from compressor outlet to
intake manifold
Restriction in intake manifold
Air leak between intake manifold and cylinder head
Foreign object in engine exhaust manifold/intake duct to
compressor
Restricted exhaust system
Restriction in turbo charger oil drain line
Restricted engine crank case breather
Thick oil sludge or coke in turbo charger central housing
Faulty fuel injection pump & Injections
Improper valve timing
Wororn-out valves, piston rings, liners, internal engine
problems (increased blow-by)
Boost pressure control valve struck in open position
Boost pressure pipe/hope assembly damage/punctured
and valve stuck in closed position
Replace air filter element
Remove restriction or replace damaged parts as required
Remove restriction or replace damaged parts as required
Arrest the leak by replacing hoses, clips, pipes or tighten the
clamps as required
Arrest the leak by replacing hoses, clips, pipes, cooler or tighten
the clamps as required
Arrest the leak by replacing gaskets or fasteners as required
Remove the object & check for the cause / origin of the object
entry & correct it
Remove restriction or replace damaged parts as required
Arrest the leak by replacing gaskets/damaged parts or tighten
the fasteners as required
Remove restriction or replace defective parts as required.
Remove restriction & clean the crank case breather
Change oil & oil filter, service or replaced turbo as required
Check & arrest the faults and replace or adjust as required
Adjust correct timing
Replace the worn-out components & rectify internal engine
problems
Refer to turbo charger authorised service center
Refer to turbo charger service center, analyze & correct the
cause of failure (turbo failure is normally due to lack of oil
low oil pressure, dirt in engine oil, foreign pratice enter into
compressor / turbine inlet).
Remove restriction or replace damaged parts as required
Air leak in duct between air clean and compressor
Air leak in ducts between compressor & intake manifold
Gas leak between exhaust manifold and cylinder head
Refer to turbo-charger authorised service center
Turbocharger damaged
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TURBO CHARGER
TROUBLESHOOTING CHART
SERVICE MANUAL
B-77
ITL
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