Why does the car jerk when going uphill?

1 Answers
VonElisa
07/29/25 8:12pm
The reason why the car jerks when going uphill is due to damaged spark plugs, poor fuel quality, or tire issues. The following are the relevant factors that cause jerking when the car is climbing a slope: 1. Damaged spark plugs: Wear of the spark plug electrode gap leads to insufficient spark plug ignition, resulting in incomplete combustion of the air-fuel mixture and jerking during uphill acceleration; cracks in the ceramic part of the spark plug can cause the spark plug to fail to ignite, leading to some cylinders not working and also causing jerking. 2. Poor fuel quality: Poor fuel quality results in poor atomization by the fuel injectors, leading to incomplete combustion of the air-fuel mixture in the cylinders, thus causing the car to jerk when going uphill. It is recommended to use higher-grade gasoline and clean the fuel system. 3. Tire issues: Uneven tire tread, such as bulges or foreign objects. Loose wheel bearings can also cause the vehicle to jerk when going uphill.
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