What Are the Reasons for a Car Engine Not Starting?

1 Answers
ElliotAnn
07/30/25 6:48am
Check if the battery voltage is too low: You can turn on the headlights and some electrical devices to observe whether there are noticeable changes in the brightness of the dashboard and interior lighting during the starting process. If they dim, it indicates insufficient battery voltage. Excessive carbon buildup in the intake pipe: Too much carbon buildup on components like the throttle valve and idle speed motor can prevent the engine's air-fuel mixture from reaching the required ratio, making the vehicle unable to start. This can also cause repeated engagement of the magnetic solenoid and starter relay, resulting in a clicking sound. Insufficient fuel supply from the fuel system: This issue is similar to excessive carbon buildup in the intake pipe, as it also prevents the engine from achieving the necessary air-fuel mixture ratio, leading to the vehicle's failure to start.
Was this review help?
11
0
Share
More Forum Discussions

How to Open the Trunk from Inside the Mazda Atenza?

The Mazda Atenza does not have a direct trunk-opening button inside the car. The method to open the trunk is as follows: 1. Unlock the vehicle; 2. Press the trunk-opening button on the key. The Mazda Atenza is a new-generation mid-to-high-end sports sedan developed and manufactured by Mazda, featuring Mazda's KODO design language with a U-shaped front face and LED headlights. The new model includes LED daytime running lights within the headlight assembly. The Atenza utilizes the SKYACTIV-Chassis technology, equipped with a high-performance MacPherson strut front suspension and a multi-link independent rear suspension. Through structural optimization, it achieves both weight reduction and increased rigidity. The car's dimensions are 4870mm in length, 1840mm in width, and 1450mm in height, with a wheelbase of 2830mm.
1
1
Share

What is the difference between a 4-cylinder engine and a 3-cylinder engine?

4-cylinder engine and 3-cylinder engine differences are: 1. Different weight: The 3-cylinder engine is smaller and lighter, making it easier to fit into many vehicle models without worrying about space constraints, which is beneficial for overall vehicle layout and aligns with lightweight body design principles, while the 4-cylinder is slightly heavier; 2. Different stability: The 3-cylinder arrangement cannot achieve symmetry like the 4-cylinder, resulting in uneven force distribution during operation, which causes the 3-cylinder engine to vibrate more than the 4-cylinder. An engine is a machine that converts other forms of energy into mechanical energy, including internal combustion engines, external combustion engines, jet engines, electric motors, etc. For example, an internal combustion engine typically converts chemical energy into mechanical energy. The term engine can refer to both the power-generating device and the entire machine including the power unit.
20
1
Share

What are the differences between the 2018 and 2019 Excelle models?

The differences between the 2018 and 2019 Excelle models lie in their configurations: The 2018 Excelle does not come with a power sunroof, while the 2019 Excelle is equipped with a power sunroof. Both the 2018 and 2019 Excelle models are compact cars produced by SAIC-GM Buick, featuring a 1.0T 125-horsepower inline three-cylinder engine with turbocharging. Both models have a maximum horsepower of 125ps, a maximum torque of 170nm, a 6-speed manual transmission, a 4-door 5-seater sedan body type, a top speed of 180 km/h, front-wheel drive, and electric power steering.
20
4
Share

When parking, should you shift to neutral first or pull the handbrake first?

When parking, whether to shift to neutral first or pull the handbrake first depends on the vehicle type: 1. Manual transmission vehicles: Pull the handbrake first, then shift to neutral; 2. Automatic transmission vehicles: Shift to neutral first, then pull the handbrake. The professional name for the handbrake is the auxiliary brake, which uses a steel wire cable connected to the rear brake shoes to brake the vehicle. Long-term use of the handbrake will cause the steel wire to undergo plastic deformation. Since this deformation is irreversible, long-term use will also increase the handbrake's travel. Neutral usually refers to the state where the vehicle's gear lever is not placed in any forward or reverse gear, and the transmission is completely separated from the drive wheels. The neutral position for manual transmissions is in the middle, while for automatic transmissions, it is marked with an N.
7
4
Share

What is the normal temperature for coolant?

Coolant at 90 degrees is normal. Coolant prevents the freezing of the liquid in cold winter conditions, which could otherwise crack the radiator and damage the engine cylinder block. Its full name is antifreeze coolant. Many people think that coolant is only used in winter, but in fact, it should be used all year round. Coolant is a type of cooling liquid with special additives, mainly used in liquid-cooled engine cooling systems. It has excellent properties such as antifreeze in winter, anti-boiling in summer, and anti-scale and anti-corrosion throughout the year. There are many types of automotive coolants, such as calcium chloride from inorganic substances, methanol, ethanol, ethylene glycol, glycerin, lubricating oil from organic substances, and common substances like sugar and honey from daily life, all of which can serve as the base liquid for antifreeze. After adding an appropriate amount of purified soft water, it becomes the general antifreeze coolant.
9
5
Share

What is the meaning of the Ford Mustang logo?

The meaning of the Ford Mustang logo: The Mustang logo features a galloping wild horse, symbolizing the car's extreme speed. The Ford Mustang inherently exudes a wild and untamed spirit, with practicality being a prominent characteristic. The extended hood and shorter rear deck are distinctive features, and the car's dynamic appearance seems to originate from the galloping Mustang logo. The black honeycomb grille further accentuates the imposing presence of the chrome emblem. The new Mustang retains its classic muscle car lines while incorporating more curved lines, making the vehicle appear more rugged, powerful, and visually striking. In terms of the powertrain, it is equipped with either a 4.0-liter V6 or a 4.6-liter V8 engine. The springs, shock absorbers, and stabilizer bars have been recalibrated, and the braking system has been significantly improved, with ESP (Electronic Stability Program) as a standard feature.
11
0
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.