How to Diagnose a slipping clutch

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How to Diagnose a slipping clutch;

1) Be aware of your clutch's action. Although a clutch/pressure plate system wears gradually over time, eventually the clutch's performance may become noticeably diminished, and by paying close attention to how it engages, slippage should be apparent to a competent driver. Here are some simple signs to watch for:

Change in engine speed without noticeable acceleration. If you rev your engine and the car hesitates before accelerating, it can mean your clutch isn't delivering the boost in RPM through the transmission to the drive wheels.
Change in the clutch pedal height where the driver feels the clutch begin to engage.
Change in perceived engine power when pulling a load. A slipping clutch reduces the amount of power delivered to the drive wheels.

2) Notice if you smell something burning coming from under the bonnet. This may be the result of an oil leak or even damaged electrical wiring (both serious, but not clutch-related issues), but it can be a sign of a slipping clutch.

 

3) Push down on the clutch pedal. Your clutch may need to be replaced if it takes only a little of the pedal movement to disengage it. In this case you should try to adjust it first and make sure that there is about an inch or two (2 to 4 cm) of free movement of the pedal before the clutch starts to disengage. This is an indicator that your clutch is not riding (i.e., is not partially disengaged) when the pedal is not depressed.

 4) Take the car for a drive. See if it takes more RPM from the engine to achieve a certain speed. This can also be an indicator your car needs a clutch replacement.

While driving down the road in 3rd gear, put the car in 2nd gear, then let out the clutch. If the RPM of the engine don't immediately go up, it may be time to replace the clutch.

5) Inspect the clutch face on any vehicle that has an inspection port on the clutch housing. Although the clutch is normally nested between the pressure plate and the flywheel, thus invisible unless dismantled, some vehicles may have an exposed clutch surface that can be visually inspected without removing the clutch.
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