Why is fuel consumption higher after replacing the fuel pump?

1 Answers
DiBrianna
07/24/25 9:21pm
Fuel consumption has no relation to the fuel pump. Check if there are any fault codes in the engine's electronic control system and whether the fuel pump's working pressure is too high. Below is additional information: Introduction to fuel pumps: A fuel pump is a lightweight and compact pump. A design has been proposed featuring a fuel pump with a housing made of aluminum-containing material and a movable molded part housed within it. This movable part is at least partially made of a sinterable, iron-based alloy material containing austenite, with a thermal expansion coefficient at least 60% of that of the housing. Classification of fuel pumps: Fuel pumps can be categorized mechanically into injection type, self-priming type, and oil type. The injection pump, also known as the high-pressure fuel pump, is commonly used in automotive diesel engines. It is a crucial component of the fuel system, often referred to as the "heart" of the diesel engine. Like centrifugal pumps, self-priming pumps require the pump casing and suction pipe to be filled with water before startup. The oil pump is highly wear-resistant and durable, boasting a very long service life.
Was this review help?
13
2
Share
More Forum Discussions

How to Calculate the Transfer Fee for Used Cars?

The calculation method for the transfer fee of used cars is as follows: 1. Cost for obtaining the 'Motor Vehicle Property Registration Certificate': Before transferring a car, you need to obtain the 'Motor Vehicle Property Registration Certificate,' with related costs including a rubbing fee and a processing fee totaling 58 yuan. 2. Transfer handling fee: The handling fee for car transfer is based on the appraised value, charged at a rate of 2.5%. For example, if a used car is sold for 110,000 yuan and the appraised value is 100,000 yuan, the transfer handling fee will be calculated based on the appraised value of 100,000 yuan, resulting in 100,000 yuan × 2.5% = 2,500 yuan. 3. Vehicle photography fee: Vehicle photography is mainly used for changing the driving license, costing 20 yuan for 2 photos. 4. Storage fee: When buying a car in a trading market, a storage fee of 150 yuan is usually required, applicable to both new and used cars.
3
0
Share

What to Do When the Windshield Fogs Up on the Outside During Rainy Days?

Solutions for fogging on the outside of the front windshield during rainy days: 1. You can use the windshield wipers or spray windshield washer fluid, which contains surfactants that can delay fogging. 2. The fastest and most effective method is to adjust the air vents to the front windshield, turn on the air conditioning cooling function, and activate the external circulation. Using the maximum fan speed, it only takes about ten seconds to quickly "blow" away the fog on the glass. Here are three methods to prevent window fogging: (1) Spraying Anti-Fog Agents and Other Preventive Measures: Spray a small amount of anti-fog agent on the car windows and wipe it clean to remove dirt and stains from the glass. While polishing the glass, it forms a thin transparent protective film that effectively prevents water vapor from condensing into fog on the glass, especially suitable for cold winters. Alternatives to anti-fog agents include dishwashing liquid, soapy water, glycerin, alcohol, or saltwater. After drying, use chamois or a soft dry cloth to remove excess fibers, ensuring the car windows remain fog-free for several days. (2) Air Conditioning Cooling Method: Use the air conditioning's dehumidification function to reduce air humidity and remove fog. Turn on the air conditioning to blow cold air toward the front windshield, utilizing the dehumidification feature to quickly remove fog. If humidity is too high and the air conditioning is ineffective, slightly open a window to rapidly reduce the humidity inside the cabin. (3) Air Conditioning Heating Method: Use the method of reducing temperature differences to eliminate fog. In winter, blow warm air onto the glass to quickly raise the temperature of the front windshield, reducing the temperature difference between the inner and outer surfaces of the glass, thereby preventing excessive fogging. However, note that the rear and side windows heat up more slowly, requiring more time to remove all fog.
12
5
Share

What is considered low fuel consumption per 100 kilometers?

Generally speaking, the average fuel consumption for urban driving is around 7.5L, costing approximately 0.5~0.7 yuan per kilometer, which can be considered relatively fuel-efficient. Here are more details about vehicle fuel consumption: 1. Introduction: Fuel consumption generally refers to constant-speed fuel consumption, which is the vehicle's fuel consumption per 100 kilometers obtained in constant-speed driving fuel consumption tests as specified by national standards for certain types of vehicles. 2. Calculation method: Fuel consumption per 100 kilometers equals fuel consumption (liters) divided by driving distance (kilometers) multiplied by 100. The fuel consumption per 100 kilometers indicated in the manuals of domestic vehicles is usually constant-speed fuel consumption. Constant-speed fuel consumption refers to the fuel economy indicator of a vehicle driving at a constant speed on good road surfaces.
18
1
Share

How to Use the Manual Mode in an Automatic Transmission Car?

To use the manual mode in an automatic transmission car, follow these steps: Shift the gear lever downward into D (Drive) mode. Then push the lever to the left. Pushing the lever forward shifts up one gear, while pulling it backward shifts down one gear. A manual-automatic transmission combines the features of both manual and automatic shifting. When driving uphill in automatic mode, the transmission will automatically upshift as speed increases, causing the engine to inject more fuel. If there is a car ahead and you slightly reduce speed, the transmission will downshift again. This frequent shifting can create an uncomfortable ride for passengers. Using manual mode avoids frequent gear changes, maintaining a steady speed and strong power output, which is not only easier on the transmission but also more fuel-efficient. When descending a long, steep slope in D mode, the car will accelerate as it moves downhill, requiring constant braking to control speed. Prolonged and frequent braking can overheat the brake pads, posing a safety risk. In such situations, switching to manual mode and selecting second or third gear allows the engine's braking effect to control speed naturally, eliminating the need for constant braking and preventing excessive speed.
7
0
Share

Can touch-up paint be used to repair car scratches?

If the car's paint surface has been scratched, it is not advisable to use spray paint for repair. After the paint surface is damaged, it must be repaired at a professional institution or a 4S shop. The car's body paint is relatively complex, consisting of four layers from the inside out: the electrophoretic layer, the primer layer, the base coat layer, and the clear coat layer. Below is some information about the car body paint: 1. The main function of the electrophoretic layer: rust prevention. After the entire body is assembled, it is immersed in an electrophoretic tank, forming an electrophoretic layer on the entire body surface. 2. Above the electrophoretic layer: the primer layer, whose main function is also rust prevention, and it can enhance the bonding ability with the next layer of body paint. 3. Above the primer layer: the base coat layer, which primarily serves an aesthetic purpose. 4. Above the base coat layer: the clear coat layer, which is mainly used to protect the base coat layer and can also enhance the glossiness of the body paint.
19
0
Share

What are the functions of LED daytime running lights?

The function of daytime running lights is not to enable the driver to see the road clearly, but to let others know that a car is approaching. Therefore, these lights are not illumination lights but signal lights. Here is more information about daytime running lights: 1. Introduction: Daytime running lights, also known as DRLs, are installed at the front sides of the vehicle to signal its presence to others during the day. Both high beams and low beams are used to illuminate the road ahead. The difference between high beams and low beams is that one has a shorter range while the other has a longer range. Typically, low beams have an illumination distance of about 30-40 meters with a coverage of approximately 160°, whereas high beams are more focused, with a brighter and longer reach (the illumination distance may vary depending on the headlight material). 2. Meaning of the indicator: The indicator light on the car dashboard is the engine fault warning light.
20
1
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.