Why Does the Car Make Abnormal Noises When Starting?

1 Answers
DelLilliana
07/29/25 6:47pm
Abnormal noises during car startup can be caused by the following reasons: 1. Hydraulic lifters: Air entering the hydraulic lifters due to low oil pressure or wear in the lifters themselves. 2. Valve clearance: Excessive valve clearance caused by wear in the valve rocker arms. 3. Dirty throttle body: Accumulation of sludge and carbon deposits leading to a dirty throttle body. 4. Carbon canister purge valve operation sound: This is a normal sound, and the car can continue to be used. However, if the noise is too loud, it is recommended to have it checked at a 4S shop. 5. Three-way catalytic converter: A "clicking" sound within half a minute after a cold start, which usually disappears afterward. This is typically the sound of the three-way catalytic converter expanding as it heats up.
Was this review help?
10
2
Share
More Forum Discussions

Why is the fuel consumption of the Leiling Hybrid increasing?

Hybrid models ultimately still rely on an engine, strictly speaking, they are still fuel-powered vehicles. Therefore, fuel consumption in winter will increase just like in conventional fuel vehicles. There are two main reasons for the increased fuel consumption: heating demand and engine warm-up. High fuel consumption in the Leiling Hybrid is generally caused by the following situations: fuel consumption and driving conditions: fuel consumption is related to many factors such as driving conditions, driving habits, vehicle maintenance conditions, and vehicle load; large mileage gap: a significant mileage gap is also an issue, as there are too many factors affecting fuel consumption; driving habits: such as driving habits (sudden acceleration, sudden braking, coasting in neutral, speed and gear mismatch), low tire pressure, poor-quality engine oil, ignition system failure, and electrical control system failure, all of which can increase the vehicle's fuel consumption.
3
5
Share

Differences Between Fengjun 5 and Fengjun 7

Differences between Fengjun 5 and Fengjun 7 are as follows: Configuration: Compared to Fengjun 5, Fengjun 7 is additionally equipped with brake assist, body stability system, and tire pressure monitoring, offering more comprehensive features. Performance: Taking the 2.0T version as an example, the 2.0T turbocharged engine in Fengjun 5 delivers a maximum horsepower of 139Ps, maximum power of 102kW, and maximum torque of 325N·m. In contrast, the 2.0T turbocharged engine in Fengjun 7 provides a maximum horsepower of 156Ps, maximum power of 115kW, and maximum torque of 345N·m. Both models are paired with a 6-speed manual transmission. In terms of power output, the top variant of Fengjun 7 is more powerful than the top variant of Fengjun 5.
12
5
Share

What is the model number of Volvo's original engine oil?

Volvo's original engine oil model is 0W30. Below is the relevant introduction about Volvo engine oil: 1. 0W30 refers to the SAE standard viscosity value, which first indicates that this oil is a multi-grade oil. 2. W stands for WINTER, and the number before W represents the flow performance at low temperatures. The smaller the number, the better the starting performance at low temperatures. The number after W represents the stability of the oil at high temperatures. The larger the number, the better the stability of the oil at high temperatures. 3. The smaller the number before W, the lower the low-temperature viscosity, the better the low-temperature fluidity, and the lower the applicable minimum temperature.
14
0
Share

How to open the trunk of the Lavida car?

The method to open the trunk of the Lavida car is: 1. The trunk switch is located on the door interior panel. 2. You can see a trunk opening button on the left front door, which is the driver's side position. 3. Simply lift the button upwards with your hand, and the trunk lid will open. Additional information: 1. Exterior design. The Lavida retains the stable style of the Volkswagen family, with a larger front grille than the previous generation, making it look more like a mid-size sedan. The body incorporates many flat elements, and the side profile is straight and angular. 2. Configuration. The Lavida comes standard with features such as auto start-stop, electronic parking brake, auto hold function, and one-touch up/down power windows for all four doors.
7
2
Share

Should You Use Internal or External Air Circulation When Turning on the Car Heater?

Whether to use internal or external air circulation when turning on the car heater depends on the specific situation: 1. In winter, if you want to quickly heat up the car interior, you can start the engine and drive normally for a while to warm it up. Once the temperature gauge needle reaches the middle position, turn on the heater with internal circulation. Using internal circulation allows the air conditioning to quickly cool or heat the car interior. This not only warms up the car quickly but also avoids putting extra load on the engine, saving fuel. 2. Although continuous internal circulation keeps the car warm, the interior becomes a relatively sealed environment. Prolonged exposure to this environment can lead to oxygen deprivation. Therefore, it's best to switch to external circulation every hour to draw in fresh air from outside. This air then passes through the air conditioning evaporator or heater core, producing cool or warm air respectively.
2
4
Share

Where is the trunk fuse located in the New Santana?

The trunk fuse in the New Santana is located inside the vehicle's engine compartment. Introduction to fuses: The English abbreviation for the cigarette lighter fuse is 'cig' or 'cigar'. A fuse can protect the circuit by melting itself when the circuit current or temperature is too high. Function of fuses: When the current abnormally rises to a certain level and duration, the fuse will melt and cut off the current, thereby protecting the safe operation of the circuit. By correctly installing a fuse in the circuit, the fuse will melt and cut off the current when the current abnormally rises to a certain level and temperature, ensuring the safe operation of the circuit.
7
5
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.