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TURBOCHARGER TROUBLESHOOTING CHART:

Turbocharger Troubleshooting

Cause Remedy
x
x
x
x
 
 
x
 
 clogged air filter element replace element according to engine manufacturers recommendations
 
x
x
x
x
x
x
 
 obstructed air intake duct to turbo compressor remove obstruction or replace damaged parts as required
x
x
 
 
x
 
 
 
 obstructed intake manifold remove obstruction or replace damaged parts as required
x
x
 
 
x
 
 
 
 obstructed air outlet duct from compressor to intake manifold refer to engine manufacturers manual & remove obstruction
 
 
 
 
x
 
 
 
 air leak in duct from air cleaner to compressor correct leak by replacing seals or tightening fasteners as required
x
x
x
x
x
 
 
 
 air leak in duct from compressor to intake manifold correct leak by replacing seals or tightening fasteners as required
x
x
x
x
x
 
 
 
 air leak at intake manifold to engine joint refer to engine manufacturers manual & replace gaskets or tighten fasteners as required
x
x
x
x
x
 
x
 
 obstruction in exhaust manifold refer to engine manufacturers manual & remove obstruction
x
x
 
 
 
 
x
 
 obstruction in exhaust stack or muffler remove obstruction or replace faulty components as required
x
x
 
 
x
 
x
 
 gas leak in exhaust manifold to engine joint refer to engine manufacturers manual & replace gaskets or tighten fasteners as required
x
x
 
 
x
 
x
 
 gas leak in turbine inlet to exhaust manifold joint replace gasket or tighten fasteners as required
 
 
 
 
x
 
 
 
 gas leak in ducting after the turbine outlet refer to engine manufacturers manual & repair leak
 
 
x
x
 
 
x
x
 obstructed turbocharger oil drain line remove obstruction or replace line as required
 
 
x
x
 
 
x
x
 obstructed engine crankcase vent refer to engine manufacturers manual, clear obstruction
 
 
x
x
 
 
x
x
 turbocharger center housing sludged or caked change engine oil & oil filter, overhaul or replace turbo as required
x
x
 
 
 
 
 
 
 fuel injection pump or fuel injectors incorrectly adjusted refer to engine manufacturers manual - replace or adjust faulty component(s) as required
x
x
 
 
 
 
 
 
 engine camshaft timing incorrect refer to engine manufactures manual & replace worn parts
x
x
x
x
 
 
x
x
 worn engine piston rings or liners (blowby) refer to engine manufacturers manual & repair engine as required
x
x
x
x
 
 
x
x
 internal engine problem (valves, pistons) refer to engine manufacturers manual & repair engine as required
x
x
x
x
x
x
x
x
 dirt caked on compressor wheel and/or diffuser vanes cleaning using a non-caustic cleaner & soft brush. Find & correct source of unfiltered air & change engine oil & oil filter
x
x
x
x
x
x
x
x
 damaged turbocharger analyze failed turbocharger, find and correct cause of failure. overhaul or replace turbocharger as required.

 

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