What are the reasons for the high-pressure common rail fuel pump not delivering oil?

1 Answers
VonIsabela
07/30/25 8:49am
Sub-shutdown switch is in the connected state; rail pressure is too low; battery voltage is too low; synchronization signal is incorrect. Here are the relevant introductions: High-pressure common rail diesel engine: A high-pressure common rail diesel engine refers to a fuel supply machine in which the generation of injection pressure and the injection process are completely separated in a closed-loop system composed of a high-pressure fuel pump, pressure sensor, and electronic control unit (ECU). High-pressure fuel pump: The high-pressure fuel pump delivers high-pressure fuel to the common rail (Rail), achieving precise control through the oil pressure in the common rail, making the pressure in the high-pressure fuel pipe (Pressure) independent of the engine speed, which can significantly reduce the degree to which the diesel engine's fuel supply pressure varies with engine speed.
Was this review help?
5
2
Share
More Forum Discussions

What are the hidden features of the Tiggo 8 Elite Edition?

Tiggo 8 Elite Edition's hidden feature is the remote start function with the key. When the car is locked, as long as you are within the key's control range, holding down the lock button will automatically start the car and turn on the automatic air conditioning at the preset temperature. Here are some related details: 1. Since its launch in 2005, the Chery Tiggo has been exported to over 80 countries, earning the trust and praise of more than 400,000 users worldwide. With its outstanding quality, it has become the only official designated vehicle for multiple international events. The Tiggo has formed a family lineup including the Classic Edition, Elite Edition, and DR European Edition. While reshaping the high-end image of China's independent brands, it has also become a globally recognized model that meets international standards. 2. A stylish sporty leisure vehicle, the Tiggo blends classic interiors with a fashionable and sporty exterior. The flexible and versatile interior space makes it suitable for both business and family use. The ACTECO engine delivers strong performance, complemented by various technological configurations, offering greater power and lower fuel consumption. Experience a new level of driving pleasure, with passion in motion and fashion in passion. 3. The Tiggo 1.6DVVT is equipped with the SQRE4G16 engine, with a maximum power of 93Kw and a peak torque of 160N·m, featuring DVVT (Dual Variable Valve Timing) and VIS (Variable Intake System) technologies. Compared to the original model, the power is increased by 6Kw and the torque by 13N·m.
8
0
Share

Why does the car suddenly fail to start?

The reasons why a car suddenly fails to start are as follows: 1. Low temperature: This situation usually occurs in winter. In such an environment, the viscosity and rotation speed of the car's engine oil will decrease, followed by a reduction in the battery's ignition energy. As a result, flammable gases cannot form, making it difficult to start the engine. If this happens, there is no need to panic. It is not a car malfunction but a normal phenomenon. You can try starting the car by pressing the clutch first. 2. Spark plug failure: The spark plug is a key component in the car's ignition system, and the vehicle's ignition system is crucial for the engine to work. Therefore, whether the spark plug can function properly affects the vehicle's performance and efficiency. Emergency solution: You can unscrew the spark plug, clean it, and reinstall it to start the car. A thorough solution is to check the ignition system and eliminate the causes of low ignition energy, such as the spark plug electrode gap, ignition coil energy, and the condition of the high-voltage wires. 3. Insufficient fuel: In this case, simply refuel your car. Therefore, during normal driving, drivers should regularly check the fuel level in the tank. When it approaches the warning level, they should refuel their vehicles promptly. 4. Battery discharge: If the battery is discharged, you should feel that the starter is weak when trying to start the car, struggling to turn the engine. If you try to start the car twice in a row, the first attempt will be stronger than the subsequent ones, and the more you fail to start, the weaker it becomes. 5. Incorrect gear position: This situation usually only happens to beginners. Generally, automatic transmission cars can only be started when in the P gear. If placed in R or D gear, the car will not start. Some manual transmission cars will also fail to start if the clutch is not pressed. Many car owners temporarily park their cars in N gear and turn off the engine, only to find that the car won't start again when they try to restart it.
15
1
Share

Where is the Luxgen Air Conditioning Filter Located?

Luxgen air conditioning filter is located behind the glove box on the passenger side. The owner needs to remove the glove box to see a white cover on the blower. Opening the cover will reveal the air conditioning filter. The air conditioning filter is a type of filter installed in the car's air conditioning system. It can absorb dust particles, reduce respiratory discomfort, minimize irritation for allergy sufferers, and protect the air conditioning cooling system. Taking the Luxgen 7 SUV as an example: its dimensions are 4818mm in length, 1930mm in width, and 1745mm in height, with a wheelbase of 2910mm. It is equipped with a 6-speed automatic transmission and has a top speed of 195 kilometers per hour.
9
3
Share

Can You Use Motorcycle Oil in a Car?

Cars should not use motorcycle oil. Different vehicle types require oil with specific standard ratings. Motorcycles typically use low-grade oil, and using motorcycle oil in a car can lead to increased engine noise, vibrations, and poor lubrication. This increases friction inside the engine. Engine oils are specifically formulated for different types of engines, so it's best not to mix them. Over time, the performance of engine oil degrades, so regular oil changes are necessary. Failing to change the oil for extended periods can accelerate engine wear. Engine oil is a substance enhanced with additives in base oil, primarily containing anti-wear agents, detergents, dispersants, and multi-grade viscosity index improvers.
19
5
Share

How to Charge a Car When the Battery Dies?

Methods to charge a car when the battery dies include: 1. Towing start: Use an appropriate tow rope and securely fasten both ends. Start slowly and ensure the speeds of both vehicles, while also paying attention to driving safety. Once the rear vehicle starts, promptly notify the front vehicle and slowly pull over to the roadside; 2. Push start: Turn the key to the ignition position and press the clutch, release the handbrake and shift into first gear, keep the clutch pressed and push the car. When the speed reaches 5 km/h, slowly release the clutch and press the accelerator; 3. Jump start using another car: Open the hoods of both cars, connect the negative terminal of the charging cable to the negative terminal of the other car, similarly connect the positive terminal of the charging cable to the positive terminal of the other car, then start the other car and keep it running for 15 to 20 minutes to allow the alternator to charge automatically.
4
3
Share

What are the body dimensions of the new Land Rover Range Rover Evoque?

The body length, width, and height of the Range Rover Evoque are 4371 mm, 1904 mm, and 1649 mm respectively. Here is some information about the Range Rover Evoque: Model of the Range Rover Evoque: The Range Rover Evoque is the most compact SUV model in the Land Rover brand. Configuration of the Range Rover Evoque: It is equipped with a 2.0-liter turbocharged engine, a 9-speed automatic manual transmission, and an on-demand four-wheel-drive system. The front suspension of the Evoque uses a MacPherson independent suspension, and the rear suspension uses a multi-link independent suspension. Advantages of the Range Rover Evoque: The Land Rover Evoque is an urban SUV, but its off-road capability is also quite impressive. Some models under Land Rover are equipped with the brand's Terrain Response system, which can enhance the vehicle's escape capability and off-road performance.
13
3
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.