Clutch sticking. works sometimes then other time sticks. Has recently been "bled" and there is not air. Could it be the seals or a spring etc? 2003 Mazda BT 2500 single cab ute. diesel engine

u still have air in it, re-bleed but this time stop on it hard then close bleeder.as far as ur throttle, it fly by wire meaning u have electronic throttle and non serviceable find one at the junk yard and replace

it shounds as though your master cylinder might not be pumping any fluid.

sounds like it needs to be bled take it back to wer ya got the WORK done is the Best thing

You have air in the clutch system. Check the fluid level in the reservoir . Check for oil leaks at the slave cylinder ( replace if there is oil ) Have the system bled . IF you have fluid and the air comes back then replace the clutch master cylinder as the air will be bypassing the piston cup from blockages in the ports.

it needs to have the air bled from the hydraulics properly

have you put a new cluch plate and a new pressure plate?

Sounds like the seal in the new clutch master cylinder. I've seen that same problem in the hand brake system in small 2 and 4 seat airplanes. ( I'm and aircraft mechanic) The problem is not air in the lines so bleeding won't help. The piston seal is intermittantly failing to seal. That is whty the function can return without any apparent reason as the seal has seated itself. The only cure is to replace or rebuild the master cylinder. ( Yes, even new or rebuilt ones can have a defective or improperly installed piston seal)

Hope this helps

is there adjustment under the dash at the pedal for the problem it may be a worn out return spring re check the lines for all air to have been bled out again.

check the mechanical leakage at the clutch housing for binding and wear.

there is a way to pressure bleed the system. depress and lock the clutch pedal down with the use of a pedal depresser or a stick, long extension something, with the pedal depressed crack the bleeder open and the pressure plate springs should force fluid out of the bleeder. note in some cases the pedal will stick in the depressed position. without the springs from the pressure plate. this is normal. just manually return the pedal to its start position, and repeat until air is purged.