Turbocharger Troubleshooting

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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