Why does the car fail to climb during hill start?

[LeStephen]

Possible reasons include: Reason 1: The gear is too high. You should shift to a lower gear when climbing: For manual transmission vehicles, it's difficult to increase the RPM when the gear is too high. Depending on the situation, you should shift to gears 1-3 when climbing. Reason 2: The slope is too steep, causing the car's power system to fail to support normal uphill movement. If the engine tachometer rises slowly during uphill driving, this mainly reflects an engine power issue. Additional information: Precautions for heavy vehicle driving: Precaution 1: When starting uphill, due to greater resistance, the clutch should be held steady for 3-4 seconds longer than on flat roads. Precaution 2: Maintain low and steady speed. If the slope is long, keep a low gear with high throttle to climb at a constant speed.