Why does the turbine in a car engine break?

It's important to clarify that most cars don't have turbines in their engines. Turbines are typically associated with turbochargers, which are devices used to increase engine power by using exhaust gases to spin a turbine and force more air into the cylinders.

Here are some common reasons why a turbocharger turbine might break:

* Foreign object damage: Small objects like pebbles, debris, or even pieces of broken engine parts can get sucked into the turbocharger and damage the turbine blades.

* Over-speeding: If the engine is revved too high or the turbocharger is over-boosting, the turbine can spin at excessive speeds, leading to wear and tear or even catastrophic failure.

* Lack of lubrication: The turbine bearings require proper lubrication to function correctly. If there's a lack of oil or poor oil quality, the bearings can overheat and seize, causing damage to the turbine.

* Wear and tear: Over time, the turbine blades can experience wear and tear due to heat, friction, and vibration. This wear can eventually lead to cracks or breakage.

* Improper installation: If a turbocharger is improperly installed or if the exhaust manifold is leaking, this can cause stress on the turbine and lead to premature failure.

It's important to note that a broken turbocharger turbine can cause serious damage to the engine. If you suspect your turbocharger is failing, it's essential to seek professional help immediately.