1990 Toyota Celica Clutch Pedal No Pressure

by Anemis
(Auckland)

The clutch pedal on my Toyota Celica just sinks to the floor when I barely touch it. I know the spring is still in there because it springs the pedal back up wen I lift it high enough. I have replaced the slave cylinder as the old slave spring was broken but after replacing it and bleeding the system the problem was still there. I then noticed a leak where the hose connects to the clutch master cylinder and wet spots behind clutch pedal. I'm thinking of replacing the clutch master cylinder with a new hose as well. Will that work after I put it in and bleed the system? What is the best way to bleed the replacement cylinders since they would be filled with air? At the moment I'm bleeding by using a pumper and forcing fluid upwards into the master cylinder.. is there a better way to do it? Would putting hose from bleed valve into container with brake fluid and pumping the pedal be a better way to bleed? Before this all happened the clutch didn't seem to be the problem. It was just replaced a couple months ago and doesn't slip or anything. I'm just hoping its the clutch master cylinder. Any advice would be great thanks =]

Steve Says,

It sounds like you probably are on the right track. If there is fluid leaking from the master cylinder then it needs to be replaced. That is most likely what is causing your pedal to just sink to the floor as well. I don't think the clutch is the problem either.

As far as bleeding it, the new master cylinder will come with instructions. It is very important to follow them. There are different ways to bleed different master cylinders so if you simply follow the instructions in with the new master cylinder you will be fine. Usually you need to start by plugging the line with a plug that is included in the master cylinder when you buy it. Then you fill it with fluid and use a blunt object to push on the master cylinder piston. Start slowly and watch as the air bubbles decrease and it will get harder and harder to push. After you notice that there are no more bubbles and you can't push the piston in anymore you will know that you are done. Now you can follow the rest of the installation instructions.

I hope this has helped.