What Causes a Sudden Increase in Resistance in the Manual Transmission Clutch Pedal?

1 Answers
PeytonRose
07/30/25 9:17am
The reasons for a sudden increase in resistance in the manual transmission clutch pedal are as follows: Clutch cable wear and aging: For cable-operated clutches, the usual cause of stiffness or inability to depress is due to wear and aging of the clutch cable, leading to jamming. This requires replacement at a professional repair shop. Hydraulic fluid aging: For hydraulic clutches, the common causes of stiffness are aging hydraulic fluid, or rusting and aging of the clutch master cylinder or slave cylinder. This is the most frequent issue. Additionally, a lack of hydraulic fluid can prevent the clutch from resetting, making it difficult to depress. Foreign objects at the pedal: Vehicles equipped with electronic clutches are relatively rare in the market, and clutch jamming is uncommon. The primary cause is foreign objects obstructing the clutch pedal, which can be resolved by removing the obstruction.
Was this review help?
12
1
Share
More Forum Discussions

What is the fuel consumption of the Mocha? And what type of gasoline should be used?

The fuel consumption of the Mocha 2.0T two-wheel-drive version is 7L per 100 kilometers, while the 2.0T four-wheel-drive version consumes 7.5L per 100 kilometers. It is recommended to use 92-octane gasoline, as specified in the vehicle's official user manual. In addition to checking the appropriate gasoline grade in the vehicle's user manual, you can also find it on the fuel tank cap, which will also indicate the recommended grade. Generally, the gasoline grade can also be determined based on the engine's compression ratio. Vehicles with an engine compression ratio between 8.6-9.9 should use 92-octane gasoline, those between 10.0-11.5 should use 95-octane gasoline, and if the compression ratio is higher, 98-octane gasoline is recommended. However, with the use of new technologies, the gasoline grade cannot be solely determined by the compression ratio. High compression ratio engines can also be tuned to use lower-octane gasoline due to other influencing factors such as ignition timing, turbocharging technology, and Atkinson cycle technology. Generally, the higher the gasoline grade, the higher the octane number and the better the anti-knock performance. 92-octane gasoline contains 92% isooctane and 8% n-heptane, while 95-octane gasoline contains 95% isooctane and 5% n-heptane. If the Mocha occasionally uses the wrong gasoline grade, simply switch back to the correct grade after consumption. However, long-term use of the wrong gasoline grade can have the following effects: For vehicles recommended to use lower-octane gasoline, using higher-octane gasoline will not cause damage, but the increase in octane number will change the fuel's ignition point, leading to delayed combustion in the engine. This reduces the engine's power output and thermal efficiency, resulting in poorer performance. For vehicles recommended to use higher-octane gasoline, using lower-octane gasoline can cause engine knocking. Due to the significantly lower octane number, the gasoline's ignition point decreases, causing premature ignition during the compression stroke. If combustion occurs before the spark plug ignites, resistance will arise during the upward stroke. This resistance makes the engine run very unstably. If the knocking is imperceptible, it only increases noise without significant damage to the engine. However, noticeable knocking indicates severe engine conditions, affecting not only driving stability but also causing abnormal wear on pistons and cylinders, and in severe cases, cylinder scoring. It is recommended to use 92-octane gasoline, as specified in the vehicle's official user manual.
14
4
Share

What engine does the Murano use?

Nissan's new Murano is equipped with the QR25 engine model, delivering a maximum horsepower of 186 hp, a maximum power output of 137 KW at 6000 rpm, and a peak torque of 243 Nm. The Nissan new Murano is paired with an Infiniti engine. Infiniti, as an automotive brand itself, is a premium brand under Nissan and also manufactures engines. For the Nissan new Murano's engine, the following maintenance methods can be applied in daily use: Use lubricating oil of appropriate quality grade. For gasoline engines, select SD--SF grade gasoline engine oil based on the additional equipment of the intake and exhaust systems and usage conditions; for diesel engines, choose CB--CD grade diesel engine oil according to mechanical load, with the selection standard not lower than the manufacturer's specified requirements. Regularly change the engine oil and filter. The quality of any grade of lubricating oil will degrade during use. After a certain mileage, performance deteriorates, leading to various engine issues. To avoid malfunctions, change the oil regularly based on usage conditions and maintain an appropriate oil level. When engine oil passes through the fine pores of the filter, solid particles and viscous substances in the oil accumulate in the filter. If the filter becomes clogged and oil cannot pass through the filter element, the filter element may burst or the safety valve may open, allowing oil to bypass through the bypass valve, carrying contaminants back to the lubrication areas, accelerating engine wear and increasing internal contamination. Regularly clean the crankcase. During engine operation, high-pressure unburned gases, acids, moisture, sulfur, and nitrogen oxides from the combustion chamber enter the crankcase through the gap between the piston rings and cylinder walls, mixing with metal particles from component wear to form sludge. Small amounts remain suspended in the oil, while larger amounts precipitate, clogging filters and oil passages, making engine lubrication difficult and causing wear. Regularly use a radiator cleaner to clean the radiator. Removing rust and scale not only ensures the engine operates normally but also extends the overall lifespan of the radiator and engine.
14
4
Share

What are the reasons for the ABS light coming on in a Mazda?

ABS light can illuminate in various states, with different causes and solutions for each state. The details are as follows: State 1: ABS warning light stays on (most common). Cause 1: The ABS wheel speed sensor's sensing part is covered by dirt, mud, or other contaminants, affecting the sensor's ability to detect the corresponding speed signal. This prevents the ABS computer from determining the vehicle speed and wheel slip rate, thus failing to issue appropriate commands to adjust braking. Solution: Clean the dirt from the wheel speed sensor and adjust the gap between the sensor and the signal ring to restore normal function. Cause 2: Loose connections between system lines or poor contact in the ABS relay can cause signal issues, leading to system failure. Solution: Check the line connections and reconnect any loose parts. State 2: ABS warning light intermittently illuminates but turns off when accelerating. Cause: When multiple vehicle electrical devices are in use, the battery voltage may drop below 10.5V. As the engine speed increases, the voltage rises, causing the ABS light to turn off. Another cause is insufficient power supply voltage to the ABS system, such as poor terminal contact or grounding issues. Solution: Check the battery's specific gravity, charging system, and power supply (e.g., voltage relay or poor power contact). State 3: ABS warning light stays on after engine start and only turns off when the engine is turned off (IGFF). Cause: Poor grounding contact in the ABS hydraulic valve body; loose wiring connections in the ABS hydraulic valve body; ABS computer failure. Solution: Loosen and then retighten the grounding screw on the hydraulic valve body, cleaning the contact surface if necessary. Check if the connector gap has widened. Replace the ABS or ABS/ASR computer if needed. State 4: ABS warning light illuminates during high-speed driving. Cause: During high-speed driving, the ABS computer detects a significant difference between the rear and front wheel speed signals. Incorrect tire or wheel rim specifications may also cause this issue. Solution: Refer to the vehicle's tire and wheel rim specifications, as indicated on the label near the fuel tank cap. State 5: ABS warning light intermittently illuminates. Cause: Improper adjustment of the brake light switch; poor internal contact in the brake light. Solution: Start the engine, press the brake pedal, and push the brake switch linkage down with a finger to its limit. Then release the brake pedal to complete the self-setting position. Replace the brake light switch if necessary. If the ABS warning light is on, it is recommended not to continue driving. An illuminated ABS light indicates a malfunction in the vehicle's anti-lock braking system. During emergency braking, if the wheels lock up, the vehicle may skid uncontrollably, preventing the driver from slowing down or adjusting the vehicle's trajectory, posing significant safety risks.
16
5
Share

What car has two stacked Rs?

The double R emblem is used by the British luxury car brand Rolls-Royce. Here is some information about the Rolls-Royce logo: 1. The double R logo of Rolls-Royce stands for the initials of its two founders, Charles Stewartrolls-Rolles and Henry Royce. 2. The famous Spirit of Ecstasy mascot was inspired by a 2,000-year-old statue of the Winged Victory of Samothrace in the Louvre Museum's art gallery. When automobile art master Charles Sykes was commissioned to design the emblem for Rolls-Royce Motor Cars, he incorporated the Winged Victory into his creative inspiration.
15
3
Share

How to Solve the Problem of Hard and Heavy Steering Wheel?

It is necessary to replace the power steering fluid of the motor vehicle. It is required to check whether the vehicle's steering gear is leaking oil. If there is leakage, it needs to be replaced. The steering column at the bottom of the steering wheel is lacking The steering column at the bottom is rubbing against the vehicle's floor mat, causing resistance. After identifying the specific cause of the fault, perform targeted repairs. After the repair, the vehicle's steering wheel will return to its normal state.
8
1
Share

How to Start a Baojun 730 When the Battery is Dead?

Here are the steps to start a Baojun 730 when the battery is dead: 1. First, open the vehicle's front hood; connect the positive cable of the emergency power source to the positive terminal of the battery, and the negative cable to the negative terminal. 2. Then, enter the vehicle and start it. Once the vehicle is running, quickly disconnect the cables from the battery. Be very careful not to let the two cables touch each other during the disconnection process. 3. Keep the engine running at around 2,000 RPM for a few minutes, or drive the vehicle for some time to complete the dead battery starting procedure.
5
3
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.