ShareTurbo Charger Diagnostics table
As you can see from our table below, similar symptoms can occur with different faults on your vehicle. Our experienced mechanics are here to help and advise you on your vehicle so please do not hesitate to speak to us to determine the exact course of action required to address your problem.
Feel free to use this as a guide to some of the symptoms that occur with faults relating to your vehicle.
| Common Faults and Symptoms | Check |
|
Air Starvation:- Loss of Power Black Smoke Blue Smoke Excessive Oil Consumption Noisy turbo charger Excessive Oil Turbine End Excessive Oil Compressor End |
Check Air Filter, Check Air Pipes Check for loose/ leaking connections |
|
Boost Pressure Loss: Loss of Power Black Smoke Noisy Turbo Charger Excessive Oil Compressor End |
Check turbo engine ducting, turbine housing connections, inlet manifold and gaskets |
|
Exhaust Pressure Loss:- Loss of Power Black Smoke Noisy Turbo Charger |
Exhaust manifold/gaskets loose/damaged/leaking Turbo mounting loose |
|
Excessive Exhaust Back Pressure:- Loss of Power Black Smoke Oil in Exhaust Manifold Noisy Turbo Charger |
Exhaust system may be damaged |
|
Engine Crankcase Pressure:- Blue Smoke Excessive Oil Consumption Centre Housing Coked Rating Assembly Binding Excessive Oil Compressor End Excessive Oil Turbine End |
Crankcase breather cleanliness |
|
Lack of Lubrication:- Excessive Oil Consumption Noisy Turbo Charger Compressor Wheel Damaged Turbine Wheel Damaged Rating Assembly Binding Centre Housing Coked |
Check oil for cleanliness, quantity. Feed pipe may be restricted or leaking. |
|
Excessive Lubrication:- Blue Smoke Excessive Oil Consumption Oil in Exhaust Manifold Excessive Oil Turbine End Excessive Oil Compressor End |
Oil drain from turbo restriction |
|
Poor compression:- Loss of Power Black Smoke |
Valve condition or timing, piston and ring wear/burning |
|
Oil in Combustion Chamber:- Blue Smoke Excessive Oil Consumption Oil in Exhaust Manifold Excessive Oil Turbine End |
Valve and guide condition, pistoning ring wear |
|
Prolonged Idling:- Blue Smoke Excessive Oil Consumption Oil in Exhaust Manifold Excessive Oil Turbine End Excessive Oil Compressor End |
Operating conditions |
|
Foreign Parts Included:- Loss of Power Black Smoke Noisy Turbo Charger Compressor Wheel Damaged Rating Assembly Binding |
Air cleaner fitted/complete, missing parts |
|
Foreign Parts in Exhaust:- Loss of Power Black Smoke Noisy Turbo Charger |
Missing parts or damaged turbine housing |
|
Vibration:- Noisy Turbo Charger Compressor Wheel Damaged Turbine Wheel Damaged Rating Assembly Binding |
Check Turbo mounting |
|
Oil lag:- Rating Assembly Binding |
Check initial start acceleration isnt excessive |
|
Cold Operation:- Compressor Wheel Damaged |
Ensure turbo is run at light load before use |
|
Faulty Turbo Charger:- Loss of Power Black Smoke Blue Smoke Excessive Oil Consumption Oil in Exhaust Manifold Noisy Turbo Charger Centre Housing Coked Rating Assembly Binding Turbine Wheel Damaged Compressor Wheel Damaged Excessive Oil Compressor End Excessive Oil Turbine End |
Remove turbo charger and send for specialist check or overhaul |
|
Car goes into Limp mode |
Sticky VNT System |
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