Browse

Property For Sale Property For Rent

Used Cars Others

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 Others Pet Supplies Sporting Goods Ticket Toys Games Transportation

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

What are the symptoms of a faulty motorcycle brake pump?

2 Answers

DeDylan

07/30/25 1:23am

The symptoms of a faulty motorcycle brake pump are as follows: 1. Shaking when braking: This phenomenon mostly occurs in older motorcycles due to prolonged use and significant wear. It is recommended to consider using a lathe polishing process or replacing the brake pads (for older vehicles). 2. The direction tends to veer to one side: This is commonly known as 'brake pull,' and the main cause of this issue is uneven force applied by the left and right brake calipers on the brake pads. In this case, the caliper needs to be replaced. 3. Brake does not return: It is necessary to check if the brake fluid is insufficient; if there is oil leakage at the brake caliper, pipelines, or joints; or if the master cylinder or caliper components are damaged. 4. Reduced braking force: Possible causes include insufficient hydraulic pressure in the caliper or master cylinder, which may indicate oil leakage; brake system malfunction; or air leakage in the brake pipelines, requiring repair.

Was this review help?

7

1

Share

DiMorgan

08/15/25 7:03am

I've been riding motorcycles for many years and have experienced several brake pump failures, with symptoms that are really obvious. The most common issue is the brake lever feeling soft and spongy, like squeezing a lump of mud, lacking the proper force feedback. Braking effectiveness is significantly reduced, requiring extra force to slow the bike down, which is especially dangerous at high speeds. The lever may also slowly sink to the bottom and not automatically return when released, indicating hydraulic system failure. I can often detect a slight oil smell or see oil leaking near the pump, with possible oil stains on the ground. In severe cases, there might be a clunking noise or vibration during braking, making the entire brake system feel unstable. These symptoms are all caused by insufficient hydraulic pressure due to damaged or leaking internal seals in the brake pump. I once nearly had an accident because of this, and since then, I've been checking the fluid and pump condition every two months. If you notice similar issues, get it repaired by a professional shop immediately—don't wait for disaster to strike.

Was this review help?

14

0

Share

Expand All

More Forum Discussions

What is the fuel consumption of the XRV?

The actual fuel consumption of the XRV is as follows: the 1.5L manual model has a fuel consumption range of 5.41-7.41L/100km, with an average of 6.41L/100km, while the 1.8L manual model has a range of 6.46-8.71L/100km, averaging 7.59L/100km. Here is some relevant information about the XRV: 1. Body Dimensions: With a comfortable space that surpasses other SUVs in its class, the XRV adopts Honda's unique MM space concept. Its body dimensions of 4270mm/1772mm/1605mm and an ultra-long wheelbase of 2610mm create a spacious and comfortable interior that exceeds its class. 2. Power Parameters: Economical fuel consumption is perfectly integrated with cutting-edge technology. The XRV is equipped with a 1.5L Earth Dreams direct-injection engine and an efficient 1.8L i-VTEC engine, paired with a new-generation CVT transmission. It delivers strong power while maintaining excellent fuel efficiency, with the 1.8L model achieving a combined fuel consumption as low as 6.6L/100km, even lower than sedans of the same displacement.

What are the advantages and disadvantages of a continuously variable transmission?

Introduction to the advantages and disadvantages of a continuously variable transmission is as follows: 1. Advantages: Good fuel economy. CVT can achieve continuously variable transmission over a wide range, obtaining the best match between the transmission system and engine conditions. By relying on the transmission's continuously variable speed adjustment to adapt to various vehicle speeds, the engine can operate under optimal conditions for extended periods, thereby improving combustion efficiency and fuel economy. 2. Disadvantages: Limited maximum torque capacity and slightly lower stability. CVT transmissions use chains (or belts, etc.) for power transmission, so when handling high torque, the requirements for the transmission chain are quite stringent (no breaking, slipping, etc.). Therefore, early CVT transmissions could not be installed in high-power vehicles. Precautions for using the transmission are as follows: 1. Do not shift into P gear before the vehicle comes to a complete stop, as this may cause permanent damage to the P gear parking pawl or internal mechanism. 2. Do not coast in neutral. Due to the different lubrication methods of automatic transmissions, coasting in neutral with low engine speed causes the internal oil pump speed to not match the vehicle's speed state, failing to meet the operational requirements. This can lead to excessively high transmission oil temperature and, in severe cases, a series of issues such as vehicle immobility and shortened transmission lifespan. 3. CVT transmission vehicles are prohibited from unauthorized modifications to CNG (compressed natural gas), LPG (liquefied petroleum gas), and other fuels. Since the operation of a CVT transmission is highly dependent on the engine's adaptation, unauthorized fuel modifications may result in reduced engine torque, instability, and other effects, preventing the CVT transmission from achieving optimal working conditions.

How Many Times Can You Retake the Driving Test?

There is no limit on retaking the theoretical tests (Subjects 1 and 4) for the driving license; for the practical tests (Subjects 2 and 3), you can schedule the test up to five times, totaling ten attempts. Below are the detailed rules regarding the number of retakes for each subject: 1. Subject 1: There is no limit on retakes. You will have one immediate retake opportunity during the test session, and each scheduled test allows two attempts. 2. Subject 2: You can schedule the test up to five times, with two attempts allowed per scheduled test, totaling ten attempts. 3. Subject 3: Similar to Subject 2, you can schedule the test up to five times, totaling ten attempts. 4. Subject 4: There is no limit on retakes. You will have one immediate retake opportunity during the test session, and each scheduled test allows two attempts.

What are the body dimensions of the Sagitar?

The length, width, and height of the Sagitar are 4753mm/1800mm/1462mm, which are official data. The length of the Sagitar refers to the distance between two vertical planes perpendicular to the vehicle's longitudinal symmetry plane and touching the outermost protruding points at the front and rear of the vehicle. The width refers to the distance between two parallel planes parallel to the vehicle's longitudinal symmetry plane and touching the outermost rigid fixed protruding points on both sides of the vehicle. The height refers to the distance between the highest point of the vehicle and the supporting plane. The Sagitar's turbocharged engine delivers a maximum power of 110kW and a maximum torque of 250Nm. This engine achieves its maximum power at 5000-6000 rpm and its maximum torque at 1750-3000 rpm. It features direct fuel injection technology and uses an aluminum alloy cylinder head and block. This engine is paired with a dry dual-clutch transmission (DCT). National regulations stipulate specific requirements for vehicle dimensions. According to the national standard "GB1589-89," the total width of a vehicle excludes side mirrors. The limitation on vehicle width is intended to provide sufficient lateral clearance for overtaking between adjacent lanes. This means that, under national standards, the significance of vehicle width data lies in ensuring adequate space during overtaking, preventing accidents or situations where road markings are narrower than the vehicle's width. Additionally, national regulations stipulate that the total width of a vehicle must not exceed 2.5m to comply with public road usage requirements.

What Causes Fuel Injector Failure?

Fuel injector failure can be caused by the following reasons: 1. Poor fuel atomization: When the injection pressure is too low, the injector nozzle is worn or has carbon deposits, or the spring end face is worn or the spring force is reduced, the injector will open prematurely and close late, resulting in poor fuel atomization. 2. Damaged injector return line: When the needle valve pair is severely worn or the fit between the needle valve body and the injector housing is not tight enough, the injector's return fuel volume increases significantly, sometimes reaching 0.1–0.3 kg/h. If the return line is damaged or missing, the return fuel is wasted. 3. Enlarged needle valve nozzle: Due to continuous high-pressure fuel flow erosion, the needle valve nozzle gradually wears out, leading to decreased injection pressure, shorter injection distance, poor diesel atomization, and increased carbon deposits in the cylinder. 4. Needle valve seizure: Water or acidic substances in the diesel can cause the needle valve to rust and stick. If the needle valve sealing cone surface is damaged, combustible gas in the cylinder can also enter the mating surface, forming carbon deposits that cause the needle valve to seize, rendering the injector non-functional and stopping the cylinder. 5. Wear on the needle valve body end face: The needle valve body end face is subjected to frequent reciprocating impacts from the needle valve, which over time forms a concave pit, increasing the needle valve lift and affecting the injector's normal operation. 6. Air leakage and oil seepage at the injector and cylinder head joint: When installing the injector into the cylinder head, carefully remove carbon deposits from the installation hole. The copper gasket must be flat and should not be replaced with asbestos or other materials to prevent poor heat dissipation or sealing failure. 7. Wear on the needle valve and needle valve bore guide surface: The needle valve's frequent reciprocating motion inside the needle valve bore, combined with contamination from diesel impurities, gradually wears the guide surface, increasing the gap or causing scratches. This leads to increased internal leakage in the injector, reduced pressure, decreased fuel injection volume, delayed injection timing, and difficulty starting the diesel engine. 8. Injector dripping: During injector operation, the needle valve body's sealing cone surface is subjected to frequent strong impacts from the needle valve, along with continuous high-pressure fuel flow erosion. Over time, the cone surface develops scratches or spots, losing its sealing ability and causing the injector to drip fuel.

What to Do When Car Windshield Washer Fluid Freezes?

Manually clean the windshield, then start the vehicle and use the heat generated by the vehicle's operation to melt the washer fluid. Here is some relevant information about washer fluid: 1. Types of washer fluid: There are many types of washer fluid available in the domestic market, but they can mainly be divided into three categories: summer washer fluid, winter antifreeze washer fluid, and special antifreeze washer fluid. Summer washer fluid is primarily used to remove insect residue from the windshield. It is important to choose the appropriate washer fluid based on different climates and temperature conditions. 2. Functions of washer fluid: High-quality washer fluid features rapid snow and ice melting, anti-glare, and anti-fogging properties, which play a significant role in improving driving safety.

Trending Ranking

Is a 6-speed dual-clutch transmission considered an automatic transmission?

Where is Rolls-Royce produced?

Is There a Charge for Checking Fault Codes at a 4S Shop?

Do modern cars still need to be warmed up before driving in winter?

What should be paid attention to when repairing the differential?

Which is Faster: Automatic or Manual Transmission?

Should Vehicle Maintenance Be Based on Mileage or Time?

What Are the Reasons for No Hot Air in a Car?

What does VSC on a car mean?

Can a C1 license drive a 9-seater vehicle?

More Forum Discussions

How to Fix a Twisted Seat Belt?

What is the difference between built-in and external tire pressure monitoring?

What is the method for judging distance with car rearview mirrors?

How to Claim the New Energy Vehicle Subsidy?

Help

Cookie

Cookie Settings

© 2025 Servanan International Pte. Ltd.