Frequent causes why the clutch doesn't disengage correctly include faults in the release system (clutch release bearing, slave cylinder, clutch lever), a jammed pilot bearing, or non-compliance with important installation requirements.
If the pedal is released quickly, a definite lurch can be felt as the engine and driveshaft re-engage and their speeds equalize. However, if the clutch is released slowly the clutch disc will "slip" against the flywheel; this friction permits the engine a smoother transition to its new rotation speed.
If your transmission makes a grinding noise when you shift gears, you are likely experiencing friction between gears due to insufficient transmission fluid, worn transmission linkage, maladjusted binding, or a “dragging clutch.” If you hear grinding sounds when shifting from neutral to any gear, you may be dealing with ...
Causes of rough shifting include: Transmission Fluid Low or Poor Condition – Vehicles low on transmission fluid or that are operating with worn out or contaminated fluid are likely to experience hard shift conditions.
Release the clutch too soon. Ideally, you want your car to ride as smoothly as possible. Releasing the clutch too early will make your vehicle jerk while putting excessive pressure on the engine and transmission. This overheats the clutch, which can do serious damage over time.
Gas before clutch is by far the preferred method. Finding what works best for you is what's important but also understanding why you are doing things a certain way, and then knowing that when you switch vehicles a different approach may be required.
The trick is to let the clutch out to the engagement point quickly and then more slowly from there. The only way you can know where this engagement point is, is by getting a feel for the car.
Apart from the clutch itself, poor engine setting or worn engine or transmission mounts can prevent smooth clutch engagement. Other possible causes for grabbing clutches are installation of the wrong clutch disk or incorrect installation.
How to avoid riding the clutch. If you're sitting too close to the pedals, you might find yourself resting your foot on the clutch for comfort's sake. Try moving your seat further back to give your foot a little more space. This should help you to avoid resting it on the clutch pedal.
Clutch judder: Clutch judder is most noticeable when setting off from a standstill. It manifests itself as a strong vibration when you release the clutch to get the car moving from rest. If you notice clutch judder, it is an indication that the clutch assembly including the flywheel might need replacement.
Wherever you drive – you always hit the clutch first and then the brake even when it's not needed. Remember this that hitting brake without hitting clutch helps you brake quicker because the friction provided by engine aids you in slowing down fast (Read up about Engine braking).
It won't damage the engine, but it will burn out the clutch faster. In order to start from a stop you have to press on the accelerator while depressing the clutch.
Always remember that any time you need to drive slower than about 5mph then you need to press the clutch or the car will stall. But you don't need to press the clutch every time you brake. For example, if you're slowing down for a bend then you'll just need to release the gas pedal and brake if necessary.
While braking, you should always depress the clutch.
Well, stalling the car especially with transmission load will take a serious toll on your vehicle's gearbox assembly. So, it is always advised to depress the clutch when braking, at least to begin driving with.
Coasting has no real affect on the internal mechanics of your car. However, it does lead to the overuse of one clutch component in particular for manual cars: the throw out bearing. The throw out bearing is the part of the clutch system that disengages the engine while the clutch pedal is pressed.
For one reason or another, there are times were you think it might be beneficial to start off from a stop in second gear rather than first in your manual transmission car. In most cases, though, doing that will cause more wear on your clutch.
Automatic transmissions that shift hard, jerk or shake during a shift change may mean your transmission fluid needs changed or fluid level is low. In manual transmission vehicles, abnormal gear shifts could indicate damaged gear synchros, worn clutches or other, more severe issues.
What's the secret to changing down gear smoothly? Maintain light pressure on the accelerator pedal as you press the clutch down, change gear and then clutch up gently (or the car will jerk). Using the accelerator will raise your engine speed to match your road speed, ultimately giving you a jerk free gear change.