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Home >> BMW >> 2012 >> X5 35i >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Functional Description - Engine Performance & Emissions - Except Diesel >> Engine Performance & Emissions, Gasoline Engine - Functional Description >> Turbocharger check on the N63/N74 engine >> 4) Check the exhaust flap

4) Check the exhaust flap

The function of the exhaust flap affects the charging at different operating points through the generated counterpressure in the exhaust system. A continuously closed exhaust flap can lead to charging faults! The exhaust flap is activated by vacuum. A vacuum line which has been pulled off can suck in particles such as dust, salt water etc. and transport these to the vacuum pump. This can cause damage to the vacuum pump.

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