on some of the 3000 gt's there is a booster for the clutch pedal under the dash. In some cases this unit is not working and is a dealer item only. If you don't have one of these the way to bleed the slave cylinder is to just bleed it like you would the brakes. The slave cylinder is located on top of the transmission by the firewall and rear mount. for additional adjustment some have an adjustment at the pedal itself. I'm a mistu dealer tech and have done these many times.
Clutch master cylinder reservoir.
Its self ajusting! all you do is pull the peddle up and press it down
DOT 3 Brake fluid.
i belive the clutch adjusts automatically as its hydrolic not cable operated The clutch itself adjusts automatically, yes. However, you can adjust the pedal if your clutch is not engaging at the correct point as you press and release the pedal. Simply sit upside down in the seat (this is not as awkward as it sounds) and look at the rod that goes through the firewall connected to the clutch pedal. It will have a little nut on it that you can adjust with a wrench. That nut can work itself lose and make you feel like you have a failing clutch when really it's just the pedal.
It has a self adjusting clutch so all you need to do is get in the car lift the clutch pedal up as far as it will go (towards the dash) and then push it all the way to the ground and the clutch will adjust itself! Good Luck!
Why adjust idle... if this is a n/a you need to just leave it alone unless you have a consistent idle less than 900 or more that 1100 .... You will get no gain from this and if you don't have a consistent idle there is probably something else wrong.....
On top of the transmission, near the clutch slave cylinder.
The clutch hydraulics have a problem is the most likely issue Either clutch master cylinder or clutch slave cylinder
http://www.3sx.com/faq/manuals/
its your tranny, you probably damaged the teeth on 1st gear or your syncros went out, if all gears are not going in then its your clutch
Overheating?Low oil Level?Worn out?
First you need to make sure that all the air is bleed out of the slave cyinder. Then to adjust the point at which the clutch will engage, tighten or loosen the pushrod nut. It will be near the clutch pedal on a little rod between the firewall and pedal (the pushrod).