Technical Uno 1100 Clutch bleed

[Mauricej41]

Guys what's the best way to bleed my clutch after fitting brand new Master and Slave cylinder on Uno 1100?

 

[bugsymike]

Guys what's the best way to bleed my clutch after fitting brand new Master and Slave cylinder on Uno 1100?

I find if a problem vehicle trying to bleed, whether clutch or brake, sometimes just removing the bleeder and keep topping the fluid reservoir until fluid is clear of air then refit bleeder can work in extreme cases, without touching the pedal.
Normally just opening bleeder, depress pedal tighten bleeder release pedal etc. Failing that one of the pressure bleeder kits available.

 

[Anwar]

I find if a problem vehicle trying to bleed, whether clutch or brake, sometimes just removing the bleeder and keep topping the fluid reservoir until fluid is clear of air then refit bleeder can work in extreme cases, without touching the pedal.
Normally just opening bleeder, depress pedal tighten bleeder release pedal etc. Failing that one of the pressure bleeder kits available.

I just replaced the master clutch cylinder on my mia 1996 checked for leaks did the gravity bleed ,pedal bleed still the clutch pedal looses pressure & goes soft car only goes into gear when off when I start the car it just jumps & dies

 

[bugsymike]

I just replaced the master clutch cylinder on my mia 1996 checked for leaks did the gravity bleed ,pedal bleed still the clutch pedal looses pressure & goes soft car only goes into gear when off when I start the car it just jumps & dies

So when you did either method clean fluid came out of bleeder, but still soft pedal?
Are you 100% sure of the quality of the replacement master cylinder?

 

[Jodiwe]

@Anwar did you actually replace one of the cylinders, or are you just trying to bleed the clutch to see if that fixes it?

I found blowing into the bottle while someone keeps the pedal slightly pressed did get some air out of the system a bit faster than the gravity bleed did.

 

[bugsymike]

@Anwar did you actually replace one of the cylinders, or are you just trying to bleed the clutch to see if that fixes it?

I found blowing into the bottle while someone keeps the pedal slightly pressed did get some air out of the system a bit faster than the gravity bleed did.

That is why a pressure bleed tool is good, though note too much pressure will cause problems.
Pressing the pedal even a bit would actually work against that, as it closes the feed from the reservoir to the piston by the action of the cylinder. If you look at how a hydraulic cylinder works online you will see what I mean.

 

[Jodiwe]

Thanks for that. I guess the guy I had in the car was moving it around enough that it worked in spite of my bad instructions.