Wastegate valve: replacement and selection

When and why it is necessary to replace wastegate valve

This component has no specified operational lifetime. A new wastegate valve is installed because of old valve jamming. Quite often the whole part (if it is metal) or its elements undergo corrosion.

Loss of valve casing tightness usually leads to the valve failure. As a result, dust penetrates into the unit, which can cause jamming, and moisture – the cause of corrosion.

If an on-board computer is installed in the car, it will display a corresponding error in case of turbo pressure valve defect. Also defect can be indicated by decreasing of engine power – it stops gaining rpm while downhill acceleration to high speed, or at high car loading. All goes back to normal after engine restart. Also breakage of the valve can provoke engine detonation, during which loud pops will be heard from the operating engine.

The valve replacement algorithm depends on technical peculiarities of the car, including the engine mounting location.