Browse

Antiques Collectibles Apparel Baby Kids Items Books， Movies And Music Electronics Free Stuff Garden Outdoor Health Beauty Home Goods Home Improvement Supplies Musical Instruments Office Supplies Pet Supplies Sporting Goods Ticket Toys Games Transportation Others

Used Cars New Cars Others

Business Crafts Design And Web Events Home Improvement Legal Lessons Personal Pets Photography Repair And Technical Support Wellness Writing， Translation， And Transcription Others

Activities & Groups Artists & Musicians Classes & Lessons Events Friendship & Networking Lost & Found Rideshare Sports Teams Volunteers Travel & Travel Partners Skills & Language Swap Other

Why doesn't the fuel pump make noise when the key is turned on?

1 Answers

JakeFitz

07/30/25 1:19am

The fuel pump is damaged. When the fuel pump fails to start and cannot establish oil pressure, the crankshaft sensor forcibly activates the pump during secondary ignition. Below is relevant information about fuel pumps: 1. Diaphragm-type fuel pump: The diaphragm-type fuel pump is a representative of mechanical fuel pumps, used in carburetor engines. It is generally driven by an eccentric wheel on the camshaft. The diaphragm-type fuel pump is characterized by its simple structure, but due to the influence of engine heat, special attention must be paid to ensuring its fuel delivery performance at high temperatures, as well as the durability of the rubber diaphragm against heat and fuel. 2. Electric fuel pump: Instead of being driven by the camshaft, it relies on electromagnetic force to repeatedly actuate the pump diaphragm. This type of electric pump allows for flexible installation positions and can prevent vapor lock. The main installation types of electric fuel pumps used in fuel-injected engines include being mounted in the fuel supply line or inside the fuel tank.

Was this review help?

12

0

Share

More Forum Discussions

What to Do When the Haval H6 Engine Yellow Light is On and Lacking Power?

Haval H6 engine yellow light on and lacking power can be addressed by cleaning the engine carbon deposits. The following is an introduction to the Haval H6: 1. Haval H6 versions: The Haval H6 is the flagship model of the Haval brand. On August 25, 2011, the Haval H6, positioned as an urban intelligent SUV, was grandly launched at the Great Wall Motors Tianjin new factory, offering Mitsubishi 2.0L gasoline-powered models and Green Power 2.0T diesel models, divided into three versions: Urban, Elite, and Premium. 2. Haval H6 powertrain: The Haval H6 is equipped with the "China Top Ten Engines" 1.5T direct-injection turbocharged engine, adopting the same CVVL continuous variable valve lift technology as BMW, leading in its class. The turbo engages at 1000 rpm, providing stronger low-speed power, with a maximum power of 124kW and a peak torque of 285N·m, delivering more robust performance.

How to Adjust Solar Tire Pressure Monitoring?

Turn on the solar display; unscrew the original tire valve cap; screw on the hex nut and the wireless tire pressure monitoring sensor in the corresponding position. Tighten the hex nut with a wrench; after installing the sensor, the receiver will display the corresponding tire pressure.

How to Turn on the Heater?

Depress the brake pedal of the car to prepare for engine start-up. Press the one-touch start button of the car to start the engine. Run the engine until the water temperature reaches the normal operating temperature of 90 degrees Celsius. Turn the fan speed adjustment knob to the far right for the highest setting. Rotate the temperature adjustment knob to the red zone on the right side to turn on the heater.

How to Remove the Cabin Air Filter of Haval H6?

Press firmly on the fixing clips on both sides of the cabin air filter cover to remove the Haval H6 filter. The following is an introduction to the Haval H6: 1. Haval H6 versions: The Haval H6 is the flagship model of the Haval brand. On August 25, 2011, the Haval H6, positioned as an urban intelligent SUV, was grandly launched at the Great Wall Motors Tianjin new factory, offering Mitsubishi 2.0L gasoline-powered models and Green Power 2.0T diesel models, divided into Urban, Elite, and Premium versions. 2. Haval H6 powertrain: The Haval H6 is equipped with the "China's Top 10 Engines" 1.5T direct-injection turbocharged engine, adopting the same CVVL continuous variable valve lift technology as BMW, leading in its class. The turbo engages at 1000 rpm, providing stronger low-speed torque, with a maximum power of 124kW and a peak torque of 285N·m, delivering more robust power.

How to Replace Brake Lights?

First, use a Phillips screwdriver or socket to remove the bolts, then pull the lamp assembly out from the rear pillar. Turn the socket counterclockwise and remove the old bulb. Slide the lamp assembly into the guide slots on the vehicle body. Finally, align the pins with the body washers and push them in until they are fully seated.

How to Adjust Valves for a 4-Cylinder Engine?

Rotate the first cylinder to the compression top dead center (align the mark on the crankshaft pulley or flywheel with the 0 scale or the pointer in the timing gear housing). Adjust the exhaust valves of cylinders 1, 2, and 3. Then rotate 360° and adjust the exhaust valve of cylinder 2, the intake valve of cylinder 3, and both intake and exhaust valves of cylinder 4.

Trending Ranking

What Are the Reasons for Noise When Shifting Gears in an Automatic Transmission?

Do hybrid vehicles use green or blue license plates?

What are the causes of engine coolant leakage?

Can the oil pan be cleaned?

Are all Buick Excelle models equipped with 3-cylinder engines?

What are the reasons for the car not accelerating when the throttle is fully pressed?

Is It Necessary to Clean Carbon Deposits Inside the Engine Cylinder?

What are the precautions for driving in snowy winter conditions?

How to Replace the Air Filter on an Atenza?

How to Turn Off SYNC?

More Forum Discussions

Can the Rear Seats of Haval H6 Be Folded Flat?

Why does the Excelle use a Wuling engine?

How to Reset the Maintenance Light on the Tiggo 8?

What are the new vehicle inspection regulations within ten years?

Help

Cookie

Cookie Settings

© 2025 Servanan International Pte. Ltd.