[Mk2] [Turbo] Clutch bleeding...or maybe the other way around....

[2tmike]

I've just replaced the clutch master cylinder and after many hours of trying, can't get a full pedal. I pulled fluid through to the slave by vacuum and then bled the normal way (and a few variations) but it always comes to the same point with only the bottom 25% of the pedal doing anything and this isn't enough to release the clutch. On the last try I bled through a full litre of fluid and it came out without any air bubbles in ...but still the majority of pedal travel does nothing.
This is the 3rd MR2 clutch master cylinder that I've changed and I know they are a pain to bleed out but this one is something else...;((((
Any ideas will be very well received....

[MartinF]

Try pumping it and building pressure before you open the bleed nipple, sometimes that will work.

[Peter Gidden]

p1$$ easy with a hydraulic bleeder. Whereabouts are you?

[2tmike]

Hi Martin, that was one of the variations I tried...
I'll have one more go and try reverse bleeding it as it feels like the master cylinder isn't filling fully from the reservoir..
Peter, probably too far away, I'm just south of Tamworth

[ej2_sir]

The way I did it recently when changing master and slave was to put fluid in master and crack the pipe a little. Bleed a bit until air bubbles stop. Tighten and move on to the union on near the frunk bulkhead. Crack this and bleed. Tighten and finish the normal way. I tried for about an hour doing it the normal way, this got me going in bout 10mins.

[2tmike]

thanks, I'll give it a go

[2tmike]

Problem solved....after vacuum bleeding, pressure bleeding and cracking lines to bleed....no success at all....put old master cylinder back on and it bled through perfectly in a few minutes and the car's drivable again. The new cylinder hadn't been assembled correctly. The part that screws onto the push rod and gets attached to the clutch pedal was not crimped properly and had come loose and allowed the push rod to get cocked over to one side, in turn putting an off centre push onto the piston in the master cylinder which then let air in on the return stroke.......

[MartinF]

Out of interest was it a Blueprint part or a Toyota one?

[2tmike]

neither, from eurocar parts, a lesson to be learned there I guess...((
I'm going the replacement seals route now in the original cylinder since the bore looks perfect. Anyone know the part number ?