Fault Finding.                                       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