How to Identify if you have a faulty turbocharger

Turbochargers are very reliable, only 1% of turbo failures are due to bad manufacturing or manufacturing errors and therefore problems relating to the engine are far more common causes for turbo failures.

Before removing your turbocharger from the vehicle, please check try one of these recommended remedies, if that doesn’t make a difference call our Returns department on 0121 458 4376 for more assistance.

 

Problem: Engine Lacks Power

Possible Cause

Possible Solution

Worn internal engine components

Repair or Replace the engine components

Low Boost

Check actuator and wastegate operations

Turbocharger damaged

Identify cause of damage, repair or replace turbocharger

Air filter/pipe blocked

Replace the current air filter

Air pipe leaking from filter to turbo

Check hoses for any cracks and tighten hose clips

 

Problem: Turbo Noisy

Possible Cause

Possible Solution

Turbo damaged

Repair or Replace the turbocharger

Air leak – exhaust gases leaking from manifold or pipes

Check and replace gaskets, manifold (check bolts for tightness ) and pipes (check for splits)

Turbocharger damaged

Identify cause of damage, repair or replace turbocharger

Air filter/pipe blocked

Replace the current air filter/pipe

Air pipe leaking from filter to turbo

Check hoses for any cracks and tighten hose clips

 

Problem: Exhaust Smoke – Excessive Blue/Black Smoke

Possible Cause

Possible Solution

Foreign body damage to compressor or turbine wheel

Take off air intake pipe – check for damage, Replace turbocharger

Insufficient oil supply to turbocharger

Repair or Replace turbocharger, find reason for insufficient oil

Actuator arm stuck in overboost

Replace or Repair actuator and/or clean turbo of carbon build up (sticky vanes)

 

Problem: Exhaust Smoke – Excessive White Smoke

Solutions:

• Check intercooler

• Check head gasket

• Check turbo internal components

 

Problem: Boost pressure too high

Solutions:

• Boost pressure control valve is closed- Hoses split or incorrectly fitted

• Check fuel system

• Wastegate activator diaphragm split or incorrectly fitted

• Check fuel system

 

Problem: Excessive Engine Oil Consumption

Solutions:

•Fuel system defective

• Replace or adjust faulty components

• Check Air pipe from turbo to inlet manifold

• Check hoses and intercooler for leaks and replace

• Incorrect operation of crankcase breather system

• Check breather hoses, pipes and one way valves breather system

 

Problem: Air Filter blocked

Solution:

• Clean or replace the air filter

 

Problem: Exhaust gas leaking from manifold

Solution:

•Replace the gaskets and manifold