What Causes Engine Shaking When Starting a Car?

1 Answers
VanPeyton
07/30/25 6:59am
Engine shaking when starting a car is caused by aging or loosening of engine mounts: Engine mounts are rubber blocks placed between the engine and the frame, designed to reduce vibration and absorb shocks during engine operation, while also securing the engine in place. Once these mounts age or become loose, the engine's shaking becomes noticeably more pronounced. Another possible cause is engine misfire: Engine misfire refers to one or more cylinders not functioning properly, typically characterized by intermittent exhaust flow, severe shaking of the exhaust pipe, noticeable engine vibration, and sometimes accompanied by a sputtering sound. This is often related to faulty ignition coils.
Was this review help?
12
4
Share
More Forum Discussions

How often should the timing belt on a Mondeo be replaced?

The timing belt on a Mondeo should be replaced every 60,000 kilometers. The functions of the timing belt are: 1. To drive the engine's valve train; 2. To ensure the engine's intake and exhaust valves open and close at the appropriate times; 3. To guarantee the engine cylinders can properly intake and exhaust air. Taking the 2020 Mondeo as an example, it is a mid-sized car with body dimensions of: length 4873mm, width 1852mm, height 1470mm, and a wheelbase of 2850mm. The vehicle weight is 1592kg. The 2020 Mondeo is equipped with a 1.5T turbocharged engine, delivering a maximum horsepower of 182PS, a maximum torque of 243Nm, and a maximum power of 134kW. It is paired with a 6-speed automatic transmission.
10
4
Share

How to Measure Car Leakage with a Multimeter?

To measure car leakage with a multimeter, follow these steps: 1. Select the correct range. The multimeter has ranges for measuring voltage, resistance, and current. To measure car leakage, set the multimeter to the current measurement range. 2. Choose the appropriate range. When measuring current, select the range from large to small. A range that is too small may damage the multimeter, so choose the correct range from large to small. 3. Open the hood of the vehicle to be tested, turn off all electrical devices, and lock the doors. For vehicles with remote controls, use the remote to lock the car. 4. Use the appropriate wrench to remove the negative terminal of the battery. Connect the red probe of the multimeter to the vehicle's grounding wire and the black probe to the negative terminal of the battery. 5. After completing the operation, wait for 30 seconds and read the value on the multimeter to determine if there is a leakage fault in the car.
19
4
Share

How to Turn on the Headlights of a Qoros 5?

The method to turn on the headlights of a Qoros 5: 1. Generally, there are two types of headlights, one is the low beam, and the other is the high beam; 2. On the left side of the steering wheel, there is a set of light combination switches. Rotating the combination switch forward one notch turns on the dashboard lights, and rotating it another notch turns on the low beam (the combination switches may vary slightly between different car brands, but they are generally similar and often include illustrated arrows for easy operation); 3. The low beam should be turned on when driving on roads with streetlights at night, when encountering pedestrians on the roadside, and when passing through narrow roads, narrow bridges, or curves; 4. The high beam should be turned on when driving on roads without streetlights or in dark conditions at night, which can be activated by rotating the switch forward one more notch.
6
1
Share

How Does a Continuously Variable Transmission Work?

Continuously Variable Transmission (CVT) operates by utilizing a torque converter to generate varying levels of torque, transmitting power to achieve seamless gear ratio changes. Types of CVTs: 1. Mechanical: Comes in various forms, with the most common being the cone-block metal V-belt drive, used in automobiles; 2. Hydraulic: Employed in engineering vehicles and agricultural machinery; 3. Electric: Designed for electric vehicles. Automotive CVT launch mechanisms include: 1. Electromagnetic clutch type: Large in mass and size, with low thermal load capacity; 2. Electronically controlled wet friction plate type: Compact structure, fast response, and minimal energy loss; 3. Torque converter type: Provides high starting torque, excellent hill-start performance, easy driving, superior driving performance, and reduces vibrations and shocks caused by uneven engine torque.
9
1
Share

What kind of car is leoprrrd?

leoprrrd is Leopaard Auto, and its models include: Leopaard CS9, Leopaard CS10, Leopaard Q6, Feiteng, Black King Kong, etc. Taking the 2018 Leopaard CS9 as an example, the body dimensions are: length 4315mm, width 1840mm, height 1650mm, wheelbase 2600mm, and fuel tank capacity 44L. The 2018 Leopaard CS9 is equipped with a 1.5L turbocharged engine, with a maximum power of 110kW and a maximum torque of 210Nm. The front suspension type is MacPherson independent suspension, and the rear suspension type is torsion beam non-independent suspension.
12
2
Share

What does NVH performance mean?

NVH is a comprehensive issue that measures the manufacturing quality of automobiles, and it provides the most direct and superficial experience for car users. Expanded information about NVH is as follows: 1. Meaning: The study of NVH characteristics is not only applicable to the entire development process of new automotive products but also to research aimed at improving the ride comfort of existing vehicle models. This involves modeling and analyzing a specific system or assembly of a car to identify the factors that most significantly impact ride comfort. By improving the vibration conditions of excitation sources (reducing amplitude or shifting frequency) or controlling the transmission of vibration noise from excitation sources into the vehicle cabin, ride comfort can be enhanced. 2. Control measures: The generation of automotive vibration and noise is not independent but closely related. It can be said that noise originates from vibration, and the three factors of vibration, noise, and comfort are closely interconnected. The goal is to reduce vibration, lower noise, and simultaneously improve ride comfort, ensuring product safety, environmental friendliness, and performance.
7
3
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.