What causes the shaking during cold start of a new Polo?
1 Answers
Cold start shaking may be caused by excessive carbon deposits or unstable fuel pressure in the fuel supply system, which can lead to unstable mixture concentration resulting in vibration. Here are relevant explanations: 1. Precautions: If the vehicle has been parked for a long time before cold start, the fuel lines may become vacuum with no fuel, and prolonged parking can cause gasoline oxidation and oil-water separation, leading to shaking. 2. Throttle troubleshooting: If the vehicle shakes severely at idle, try gently pressing the accelerator. If the shaking disappears after pressing the accelerator, it's likely that the throttle is dirty and needs cleaning.