How do you lower the tick -over on a vw polo sdi?

To lower the tick-over (idle speed) on a VW Polo SDI, you typically need to adjust the idle speed screw on the injection pump. Locate the screw, usually near the fuel injection pump, and turn it counterclockwise to decrease the idle speed. It’s important to make small adjustments and monitor the engine's performance to ensure it runs smoothly. Always refer to the vehicle's service manual for specific instructions related to your model.