Signs Your Turbo Is Failing and How to Make It Last

What a turbo does

A turbocharger uses exhaust gas to spin a turbine, which drives a compressor that pushes more air into the engine. More air means more power from a smaller engine, which is why most modern diesels and many petrol cars are turbocharged.

The turbo spins at extremely high speed and relies entirely on a clean, steady supply of engine oil to survive.

Warning signs

A noticeable loss of power, especially when accelerating, is often the first sign. You may also hear a louder whistle or a siren-like whine, see blue or grey smoke from the exhaust, or find the car goes into limp mode with the engine management light on.

Rising oil consumption with no visible leak can also point to a turbo passing oil into the intake or exhaust.

It is not always the turbo

Many cars that seem to have a failed turbo actually have a split boost hose, a sticking wastegate or actuator, a faulty boost sensor or a blocked DPF or EGR valve. Replacing a turbo when the real fault is elsewhere is an expensive mistake, and a new turbo can be damaged by the same underlying problem.

We run a diagnostic check and inspect the pipework and turbo itself before recommending a replacement.

How to make your turbo last

Service on time with the correct oil, as old or wrong oil is the number one turbo killer. Let the engine warm up before using full power, and after a hard drive or motorway run, let it idle for a short while before switching off so the turbo can cool with oil still flowing.

Turbo diagnosis and replacement in Oldbury

If your car has lost power or you think the turbo is on its way out, call us on 0121 544 3736 or bring it to us on Park Lane. We will find the real cause and give you a clear quote.