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Turbocharger Facts
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For Diesel Turbocharged Engines


A Engine lacks power
B Black exhaust smoke
C Excessive engine oil consumption
D Blue exhaust smoke
E Turbocharger noisy
F Cyclic sound from turbocharger
G Oil leak from compressor seal
H Oil leak from turbine seal

 

 

 

 

 

 

 

 

 

 

A B C D E F G H

CAUSE

REMEDY

. . . Clogged air filter element Replace element according to engine manufacturers recommendations
. . Obstructed air intake duct to turbo compressor Remove obstruction or replace damaged parts as required
. . . . . Obstructed air outlet duct from compressor to intake manifold Remove obstruction or replace damaged parts as required
. . . . . Obstructed intake manifold Refer to engine manufactures manual & remove obstruction
. . . . . . . Air leak in duct from air cleaner to compressor Correct leak by replacing seals or tightening fasteners as required
. . . Air leak in duct from compressor to inlet manifold Correct leak by replacing seals or tightening fasteners as required
. . . Air leak at intake manifold to engine joint Refer to engine manufacturers manual & replace gaskets or tighten fasteners as required
. . Obstruction in exhaust manifold Refer to engine manufactures manual & remove obstruction
. . . . . Obstruction in muffler or exhaust stack Remove obstruction or replace faulty components as required
. . . . Gas leak in turbine inlet to exhaust manifold joint Refer to engine manufacturers manual & replace gaskets or tighten fasteners as required
. . . . Gas leak in turbine inlet to exhaust manifold joint Replace gasket or tighten fasteners as required
. . . . . . . Gas leak in ducting after the turbine outlet Refer to engine manufactures manual & repair leak
. . . . Obstructed turbocharger oil drain Remove obstruction or replace line as required
. . . . Obstructed engine crankcase vent Refer to engine manufacturers manual, clear obstruction
. . . . Turbocharger center housing sludged or coked Change engine oil & oil filter, overhaul turbocharger as required
. . . . . . Fuel injection pump or fuel injectors incorrectly adjusted Refer to engine manufacturers manual - replace or adjust faulty component(s) as required
. . . . . . Engine camshaft timing incorrect Refer to engine manufacturers manual & replace worn parts
. . Worn engine piston rings or liners (blow by) Refer to engine manufacturers manual & repair engine as required
. . Internal engine problem (valves, pistons) Refer to engine manufacturers manual & repair engine as required
Dirt caked on compressor wheel and/or diffuser vanes Clean using a Non-Caustic cleaner & Soft Brush. Find & correct source of unfiltered air & change engine oil &oil filter
. Damaged turbocharger Analyze failed turbocharger, find & correct cause of failure, overhaul or replace turbocharger as required

 

 

 

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