Identifying Boost Problems

[Inigo Montoya]

#1 -- LACKS POWER

Dirty air cleaner
Clean or replace element according to manufacturer's recommendations

Restricted air duct from compressor to intake manifold
Remove restriction or replace damaged parts as required

Restricted intake manifold
Refer to engine manufacturer's manual and remove restriction

Air leak in feed from compressor to intake manifold
Replace seal, gaskets or tighten fasteners as required

Air leak between intake manifold and engine
Refer to engine manufacturer's manual and replace gaskets or tighten fasteners as required

Foreign object in exhaust manifold (from engine)
Refer to engine manufacturer's manual and remove obstruction

Restricted exhaust system
Remove restriction or replace damaged parts as required

Exhaust manifold cracked, gaskets blown or missing
Refer to engine manufacturer's manual and replace gaskets or damaged parts as required

Gasket leak at turbine inlet / exhaust manifold joint
Replace gasket or tighten fasteners as required

Fuel injection pump or fuel injectors incorrectly set
Refer to engine manufacturer's manual and replace or adjust faulty components as required

Engine valve timing incorrect
Refer to engine manufacturer's manual for correct settings and adjust as required

Worn engine piston rings or liners
Refer to engine manufacturer's manual and repair as required

Burnt valves and / or pistons
Refer to engine manufacturer's manual and repair as required

Excessive dirt build up on compressor wheel and / or diffuser vanes
Clean in accordance with details given in the appropriate Holset publication

Turbocharger damaged
Find and correct cause of failure, repair or replace turbocharger as necessary

 

[Inigo Montoya]

#2 -- BLACK EXHAUST SMOKE

Dirty air cleaner
Clean or replace element according to manufacturer's recommendations

Restricted compressor intake duct
Remove restriction or replace damaged parts as required

Restricted air duct from compressor to intake manifold
Remove restriction or replace damaged parts as required

Restricted intake manifold
Refer to engine manufacturer's manual and remove restriction

Air leak in feed from compressor to intake manifold
Replace seal, gasket or tighten fasteners as required

Air leak between intake manifold and engine
Refer to engine manufacturer's manual and replace gaskets or tighten fasteners as required

Foreign object in exhaust manifold (from engine)
Refer to engine manufacturer's manual and remove obstruction

Restricted exhaust system
Remove restriction or replace damaged parts as required

Exhaust manifold cracked, gaskets blown or missing
Remove restriction or replace damaged parts as required

Gaz leak at turbine inlet / exhaust manifold joint
Refer to engine manufacturer's manual and replace gaskets or damaged parts as required

Fuel injection pump or fuel injectors incorrectly set
Refer to engine manufacturer's manual and replace or adjust faulty components as required

Engine valve timing incorrect
Refer to engine manufacturer's manual for correct settings and adjust as required

Worn engine piston rings or liners
Refer to engine manufacturer's manual and repair as required

Burnt valves and / or pistons
Refer to engine manufacturer's manual and repair as required

Excessive dirt build up on compressor wheel and / or diffuser vanes
Clean in accordance with details given in the appropriate Holset publication

Turbocharger damaged
Find and correct cause of failure, repair or replace turbocharger as necessary

 

[Inigo Montoya]

#3 -- Blue Exhaust Smoke

Dirty air cleaner
Clean or replace element according to manufacturer's recommendations

Restricted compressor intake duct
Remove restriction or replace damaged parts as required

Air leak in feed from compressor to intake manifold
Replace seal, gasket or tighten fasteners as required

Air leak between intake manifold and engine
Refer to engine manufacturer's manual and replace gaskets or tighten fasteners as required

Foreign object in exhaust manifold (from engine)
Refer to engine manufacturer's manual and remove obstruction

Restricted turbocharger oil drain line
Remove restriction or replace damaged parts as required

Restricted engine crankcase breather
Refer to engine manufacturer's manual, clear restriction

Turbocharger bearing housing sludged or coked
Change engine oil and oil filter, overhaul or replace turbocharger as required

Worn engine piston rings or liners
Refer to engine manufacturer's manual and repair as required

Burnt valves and / or pistons
Refer to engine manufacturer's manual and repair as required

Excessive dirt build up on compressor wheel and / or diffuser vanes
Clean in accordance with details given in the appropriate Holset publication

Turbocharger damaged
Find and correct cause of failure, repair or replace turbocharger as necessary

 

[Inigo Montoya]

#4 -- High Oil Consumption

Dirty air cleaner
Clean or replace element according to manufacturer's recommendations

Restricted compressor intake duct
Remove restriction or replace damaged parts as required

Air leak in feed from compressor to intake manifold
Replace seal, gasket or tighten fasteners as required

Air leak between intake manifold and engine
Refer to engine manufacturer's manual and replace gaskets or tighten fasteners as required

Foreign object in exhaust manifold (from engine)
Refer to engine manufacturer's manual and remove obstruction

Restricted turbocharger oil drain line
Remove restriction or replace damaged parts as required

Restricted engine crankcase breather
Refer to engine manufacturer's manual, clear restriction

Turbocharger bearing housing sludged or coked
Change engine oil and oil filter, overhaul or replace turbocharger as required

Worn engine piston rings or liners
Refer to engine manufacturer's manual and repair as required

Burnt valves and / or pistons
Refer to engine manufacturer's manual and repair as required

Excessive dirt build up on compressor wheel and / or diffuser vanes
Clean in accordance with details given in the appropriate Holset publication

Turbocharger damaged
Find and correct cause of failure, repair or replace turbocharger as necessary

 

[Steven.]

ive seen this somewhere before

 

[Inigo Montoya]

#5 -- "Noisy" Turbocharger

Restricted compressor intake duct
Remove restriction or replace damaged parts as required

Restricted air duct from compressor to intake manifold
Remove restriction or replace damaged parts as required

Restricted intake manifold
Refer to engine manufacturer's manual and remove restriction

Air leak in feed from air cleaner to compressor
Replace seal, gaskets or tighten fasteners as required

Air leak in feed from compressor to intake manifold
Replace seal, gasket or tighten fasteners as required

Air leak between intake manifold and engine
Refer to engine manufacturer's manual and replace gaskets or tighten fasteners as required

Foreign object in exhaust manifold (from engine)
Refer to engine manufacturer's manual and remove obstruction

Exhaust manifold cracked, gaskets blown or missing
Refer to engine manufacturer's manual and replace gaskets or damaged parts as required

Gaz leak at turbine inlet / exhaust manifold joint
Replace gasket or tighten fasteners as required

Gas leak in ducting after turbine outlet
Refer to engine manufacturer's manual and repair leak

Excessive dirt build up on compressor wheel and / or diffuser vanes
Clean in accordance with details given in the appropriate Holset publication

Turbocharger damaged
Find and correct cause of failure, repair or replace turbocharger as necessary

 

[Inigo Montoya]

ive seen this somewhere before

i saved it (thank god) and cant find the link.

# 6 -- "Cyclyc sound from turbocharger"

Restricted compressor intake duct
Remove restriction or replace damaged parts as required

Excessive dirt build up on compressor wheel and / or diffuser vanes
Clean in accordance with details given in the appropriate Holset publication

 

[Inigo Montoya]

#7 -- Oil leak from compressor seal

Dirty air cleaner
Clean or replace element according to manufacturer's recommendations

Restricted compressor intake duct
Remove restriction or replace damaged parts as required

Foreign object in exhaust manifold (from engine)
Refer to engine manufacturer's manual and remove obstruction

Restricted exhaust system
Remove restriction or replace damaged parts as required

Restricted turbocharger oil drain line
Remove restriction or replace damaged parts as required

Restricted engine crankcase breather
Refer to engine manufacturer's manual, clear restriction

Turbocharger bearing housing sludged or coked
Change engine oil and oil filter, overhaul or replace turbocharger as required

Worn engine piston rings or liners
Refer to engine manufacturer's manual and repair as required

Burnt valves and / or pistons
Refer to engine manufacturer's manual and repair as required

Excessive dirt build up on compressor wheel and / or diffuser vanes
Clean in accordance with details given in the appropriate Holset publication

Turbocharger damaged
Find and correct cause of failure, repair or replace turbocharger as necessary

 

[Inigo Montoya]

# 8 -- Oil leak from turbine seal

Restricted turbocharger oil drain line
Remove restriction or replace damaged parts as required

Restricted engine crankcase breather
Refer to engine manufacturer's manual, clear restriction

Turbocharger bearing housing sludged or coked
Change engine oil and oil filter, overhaul or replace turbocharger as required

Worn engine piston rings or liners
Refer to engine manufacturer's manual and repair as required

Burnt valves and / or pistons
Refer to engine manufacturer's manual and repair as required

Excessive dirt build up on compressor wheel and / or diffuser vanes
Clean in accordance with details given in the appropriate Holset publication

Turbocharger damaged
Find and correct cause of failure, repair or replace turbocharger as necessary