Variable geometry turbocharger actuator leakage test

Make: Alfa Romeo
Model: GT Factory Service Manual
Year: 2003–2010
Section: Turbo charging system › Variable geometry turbocharger actuator leakage test

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EngineVariable geometry turbocharger actuator leakage test

VARIABLE GEOMETRY TURBOCHARGER ACTUATOR LEAKAGE TEST

Check 1064BC

1.9 JTD 16V

Visually inspect that whilst the engine is being started (key in START position) the turbocharger actuator connecting rod (turbine stator vane positioning device) moves by about 10 mm in the direction of the actuator.

CHECK USING EXAMINER

With the engine switched off, connect connector EX09 with transducer EX06 to the section of pipe between the actuator and the solenoid valve.

In the instrument ambient, select the intake pressure measurement pressure gauge.

Start the engine and let it idle, then wait until the pressure level stabilizes.

The reading must not exceed 450 - 550 mmHg.

The graphic acquisition of the pressure can be made by selecting the scale 2000 or 4000 mmHg.

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