Join Date: Jul 2005
Location: Springfield, Ohio, USA, ,
Sometimes, the master cylinder runs low on fluid and it will easily get air in the line, usually from setting for long periods. When this happens, the master cylinder needs bled BEFORE you bleed from the slave cylinder. Just using that bleed screw does not cut the mustard. Try this;
-cover everything with plastic first! (as mentioned above), remove the master clutch cylinder cover and make sure it has plenty of fluid (use the correct fluid! Not DOT 3) a little above the high mark is okay, then just lay the cap on without the bellow.
-have someone hold a catch pan of some type under the banjo bolt on the master cylinder (could not hurt to have a couple of wet rags on hand to wipe any fluid that may get away from you)
-use agood wrench to crack the bolt open, then snug it up (will be easier to have it loosened up), then, while the pan is under it, squeeze the clutch handle a couple of times and hold it in the sqeezed position and SLOWLY crack the banjo bolt open. When you open it slow, that should help keep with the fluid from squirting out. You may even have the other person hold a rag over the wrench to keep it from happening. Then remember to snug that bolt up BEFORE you release the handle.Repeat this type of bleeding 5 or 6 times, making sure to keep the fluid up so you do not suck air in. When done, top off if needed and put the bellows and cap back on. Go ahead and try the clutch again before bleeding from the bleeder screw on the slave cylinder.
Also, you will need to check for leakage from around that slave cylinder. If no leak is present, and this procedure does not work, then chances are you need to rebuild that master.
Good luck! Wendell