How to Adjust a Heavy Flat Car Pedal?
2 Answers
You can adjust the throttle sensitivity by adjusting the throttle cable. During the adjustment, first loosen the fixing nut with a small wrench. Then rotate the position of the adjustment nut to achieve the purpose of adjusting the tightness of the throttle cable. For models with electronic throttles, the throttle sensitivity can be adjusted via the computer.
I've been driving manual transmission cars for over ten years and have encountered several instances where the clutch pedal became heavier. Most of the time, it's because the clutch slave cylinder or master cylinder needs replacement—over time, the aging seals can leak, increasing hydraulic resistance. Last time at the repair shop, they adjusted the pedal free play and slightly raised the engagement point, making it much easier to press. For cable-operated clutches, it's even simpler—just locate the clutch cable adjustment screw in the engine bay and loosen it counterclockwise by two turns to lighten the pedal. But be careful not to over-adjust, as incomplete disengagement can burn the clutch disc. A worn diaphragm spring can also make the pedal heavier, which requires transmission disassembly to fix. I recommend having a mechanic perform a thorough inspection of the clutch system—sometimes, high moisture content in the brake fluid can also affect hydraulic performance.
