This is a page detailing how to quickly lubricate the hydraulic clutch system on an 2000 Impreza RS. This will often cure the "creak" many people hear when depressing the clutch pedal. If you have any questions, please feel free to direct them here. I will answer any questions that I am able to.
In order to access the clutch slave cylinder, you have to remove the stock intake plenum from the throttle body. The yellow dot is the hose clamp holding the air box to the throttle body, and requires an 8mm socket (or a flat head screwdriver) to undo. The 2 red dots are simple bolts that can be removed with a 10mm socket. The 3 blue dots indicate the 3 breather lines attached to the stock airbox. Remove all these to gain access to the work area.
This is what you will see with the airbox out of the way- I've labelled a few points of interest. This project was undertaken during the install of a Braided Stainless Steel Clutch Line so the pictures that follow will be a bit different from what you see- your slave cylinder should not have fluid all over it, and your clutch line should still be attached to the slave cylinder.
In this picture, you can see the clutch fork and the dust boot that protects it as it goes into the transmission housing. You can either attempt to remove this dust boot to see what you are lubricating, or you can go by "feel" as I did, as the dust boot is a pain to remove. If you slide a straw down against the clutch fork and through the rubber boot, you will meet resistance after a few inches- this is the top of the pivot point for the clutch fork. I simply put some chain grease into the straw and let it run down and onto the pivot point. This chain grease is great stuff as it begins life as a liquid and then solidifies a bit into a more sticky grease. This probably is not the source of your squeaking, but it is a good thing to keep lubricated at any rate.
This photo shows the slave clutch cylinder with it's rubber boot removed- this is fairly simple to remove and reattach with some gentle nudging. You want to lubricate the rod you see inside with some high temperature bearing grease- it gets fairly warm in this portion of the engine bay. Smear grease onto this rod with your finger and reapply the rubber boot. If you now go and pump the clutch pedal a few times, the grease will find it's mark and your creak should be gone. The pedal may be a bit spongy at first but should firm right up. With that done, reassemble the airbox making certain to reattach your 3 breather lines, and you are done.
Standard Disclaimer: Modification of your car involves risks and may void your warranty. I can not be held responsible for the modifications you consciously decide to undertake nor for the results of doing so.
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