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Non return is present & on the correct way yes. Pedal hasnt firmed up with the engine switched off.Quote:
Originally Posted by dhdev (Oli)
Thinking it might just be easiest to source another Servo & MC from a Corsa tomorrow. Waste no time getting that on & see what happens. :confused:
So it felt good when bled yesterday, but today just goes to the floor with no action at the caliper? Sounds strange indeed. I take it there are no leaks etc. No damaged hoses, bulging etc.Quote:
Originally Posted by craig green
Sounds like knackered servo. Check that the non return valve is working by removing it and giving it a suck and blow (ooer!) Obv should be able to suck air in the direction of the engine.Quote:
Originally Posted by craig green
Non return valve was jchecked, & sucked on/blown through prior to fitting it up a few days ago. To me it feels like the MC is shot, maybe I ruined it actuating it whilst it was off the car some time ago. But also the servo shouldnt hiss with every push of the pedal, should it?
Just my luck both are screwed!
You get a hiss when you press each time, as initially both sides of the servo diaphragm have vacuum applied, on pressing the pedal a valve is opened and the pedal side of the servo is opened to atmosphere. The air then hisses into the servo and the positive pressure gradient across the sides of the servo, multiplied by the area of the diaphragm gives you the pedal boost.
It seems strange that the pedal suddenly goes to the floor after working yesterday. Could try another bleed before ripping it all apart :confused:
It was bled with a pukka workshop pressure bleeder from a compressor, the type where the fluid is drawn through the caliper. I cant imagine it needs it again tbh.
[edit] I say it was OK yesterday, I cant be sure other than it felt OK without driving.
Hmm, very strange indeed.
Has the fluid level changed????
They don't always provide a perfect bleed. Always best to try a few pressure bleed applications with your foot. Pump the pedal repeatedly and firmly with your foot to agitate any trapped air, then hold the last application down, whilst your assistant opens the bleed screw. Then let them close it and repeat a few times. You will quite often get pockets of air trapped that a normal bleeder (vacuum or pressure type) will not agitate.Quote:
Originally Posted by craig green
It appears not.Quote:
Originally Posted by Adam
Might have another go bleeding it then................
This is doing my head in!