Fault Finding Turbo Problems

Engine lacks power
Cause	Remedy
Worn internal engine components	Repair engine as required
Fuel system defective or incorrectly adjusted	Replace or adjust faulty components
Low boost	Check wastegate and actuator operation
Damaged turbocharger	Determine reason for failure - repair or replace turbo
Air filter blocked	Replace air filter
Air pipe into turbo restricted	Replace pipe
Air pipe from filter to turbo leaking	Check hoses for splits and tighten hose clips
Air pipe from turbo to inlet manifold leaking	Check hoses and intercooler for leaks and replace
Ignition timing incorrectly adjusted	Check and reset
Blockage in exhaust system	Replace silencers or catalytic converter
Exhaust gas leaking from manifold	Replace gasket or manifold - check bolts for tightness
Turbo noisy
Damaged turbocharger	Determine reason for failure - repair or replace turbo
Air pipe into turbo restricted	Replace pipe
Air pipe from filter to turbo leaking	Check hoses for splits and tighten hose clips
Air pipe from turbo to inlet manifold leaking	Check hoses and intercooler for leaks and replace
Carbon build-up in turbo bearing housing	Change engine oil and filter-overhaul or replace turbo
Blockage in exhaust system	Replace silencers or catalytic converter
Exhaust gas leaking from manifold	Replace gasket or manifold - check bolts for tightness
Excessive engine oil consumption
Worn internal engine components	Repair engine as required
Fuel system defective or incorrectly adjusted	Replace or adjust faulty components
Damaged turbocharger	Determine reason for failure - repair or replace turbo
Air filter blocked	Replace air filter
Air pipe into turbo restricted	Replace pipe
Incorrect operation of crankcase breather system	Check breather hoses, pipes and one way valves as per manufacturers recommendations
Carbon build-up in turbo bearing housing	Change engine oil and filter-overhaul or replace turbo
Air pipe from turbo to inlet manifold leaking	Check hoses and intercooler for leaks and replace
Restricted oil drain pipe from turbocharger	Replace oil drain pipe
Blue exhaust smoke at idle
Worn internal engine components	Repair engine as required
Fuel system defective or incorrectly adjusted	Replace or adjust faulty components
Damaged turbocharger	Determine reason for failure - repair or replace turbo
Air filter blocked	Replace air filter
Air pipe into turbo restricted	Replace pipe
Restricted oil drain pipe from turbocharger	Replace oil drain pipe
Incorrect operation of crankcase breather system	Check breather hoses, pipes and one way valves as per manufacturers recommendations
Carbon build-up in turbo bearing housing	Change engine oil and filter-overhaul or replace turbo