What Causes the Engine to Stall During Hill Start in Subject 2?

[Christina]

Stalling during a hill start may occur because the clutch pedal is lifted too high and the brake pedal is released too quickly when starting. Here are methods to avoid rolling back or stalling on a slope: 1. Apply throttle during hill start: When on a slope, if no throttle is applied, the idle speed might be insufficient to move the vehicle, leading to a stall. Once the vehicle starts rolling back, it's difficult to avoid stalling. In case of rolling back, first press the brake and clutch to stop the vehicle, then restart. 2. Release the clutch slowly: During a hill start, when the left foot slowly releases the clutch pedal until the vehicle vibrates, hold this position slightly to confirm if the vehicle has the tendency and power to move forward. Do not continue lifting the clutch pedal to prevent stalling. 3. Avoid prolonged throttle acceleration: During the start, avoid prolonged throttle acceleration in a semi-engaged clutch state—once the vehicle is driven by the throttle, it won't roll back, so feel free to release the clutch pedal and press the throttle to start. 4. Engage handbrake and shift to neutral: Practice the coordination between throttle and clutch. During the test, no matter the situation, always engage the handbrake and shift to neutral when stopping on a slope. 5. Throttle-clutch coordination: Operate in the sequence of throttle first, then clutch. When braking, brake first, then clutch. Pressing the clutch first during the test is considered coasting in neutral. After continuous braking to a certain extent, the vehicle body will shake, indicating that the engine can no longer drive the gears due to braking resistance. At this point, press the clutch to cut off the engine's power transmission and avoid stalling.