a little clutch help please....
a little clutch help please....
Author
Discussion

prettyboyben

Original Poster:

170 posts

209 months

Tuesday 30th June 2009
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ok guys, so i dont know if anyone remembers but i posted a few weeks ago about having my master and slave cylinders changed and then the clutch going on the way home from the garage. well, i just assumed it was the clutch that had gone but now after reading some other posts im not so sure. basically you can still drive the car but if you give it some boot when it revs up to over about 3000 rpm in anything higher than second then its revving up but not really picking up any speed. does this sound like the fingers have gone and will it be a new clutch job or just a recon the old one? sorry all ive done is ask questions, i will get some pics on of the car once i finally get to go out in the bloody thing! hahaha

brogenville

941 posts

231 months

Tuesday 30th June 2009
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If the revs are picking up, but you're not accelerating, then 10-1 your friction plates worn down now- new clutch time I'm afraid. I would refrain from driving the car too, as doing so could be doing irreparable damage to the flywheel.

Interesting though- I dont know of anyone else who's managed to wear a clutch down this way- normally the clutch fails in some other way before you actually get a chance to wear the clutch down fully in the normal way a clutch gets used up.

plumAJP

1,149 posts

219 months

Wednesday 1st July 2009
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sounds like friction plates are worn and its slipping hence revs rising but no go.

prettyboyben

Original Poster:

170 posts

209 months

Wednesday 1st July 2009
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cheers, just didnt want to be spending money on a clutch if i didnt need it. am not driving the car so its ok hopefully! have to get me credit card out then! hahaha

FarmyardPants

4,379 posts

248 months

Wednesday 1st July 2009
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It seems a bit of a coincidence that your clutch started to slip on the way home from the garage after changing the master/slave. It could be that the clutch is not engaging fully. When you lift the pedal to pull away, where does the clutch bite - when the pedal is near the carpet or when you've nearly released it? There could be a mechanical or hydraulic reason for the slip. But as others have said, don't provoke it to slip as this will wear or glaze your clutch even if it was ok before.

You could try loosening the bleed nipple and see if fluid spurts out of its own accord, if so your clutch hydraulics are pressurised at zero pedal pressure (for some reason) which could also cause it to slip. Just a thought, good luck...

PS if you do that, don't get any fluid on your paintwork!

Edited by FarmyardPants on Wednesday 1st July 13:37

WIL35

548 posts

240 months

Wednesday 1st July 2009
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FarmyardPants said:
You could try loosening the bleed nipple and see if fluid spurts out of its own accord, if so your clutch hydraulics are pressurised at zero pedal pressure (for some reason) which could also cause it to slip. Just a thought, good luck...

PS if you do that, don't get any fluid on your paintwork!

Edited by FarmyardPants on Wednesday 1st July 13:37
That happened to mine when I replaced the Master, Slave and the Clutch at the same time. Mine had fluid under pressure after a short run, the clutch would slip and would shoot out of the bleed nipple when it was loosened.

I rebuilt my old master using seals from the new one and it has been fine for the last 10k miles. It must have been due to a fault with the valve in the end of the master cylinder. Worth checking before removing the clutch (as I nearly did)!

FarmyardPants

4,379 posts

248 months

Wednesday 1st July 2009
quotequote all
WIL35 said:
FarmyardPants said:
You could try loosening the bleed nipple and see if fluid spurts out of its own accord, if so your clutch hydraulics are pressurised at zero pedal pressure (for some reason) which could also cause it to slip. Just a thought, good luck...

PS if you do that, don't get any fluid on your paintwork!

Edited by FarmyardPants on Wednesday 1st July 13:37
That happened to mine when I replaced the Master, Slave and the Clutch at the same time. Mine had fluid under pressure after a short run, the clutch would slip and would shoot out of the bleed nipple when it was loosened.

I rebuilt my old master using seals from the new one and it has been fine for the last 10k miles. It must have been due to a fault with the valve in the end of the master cylinder. Worth checking before removing the clutch (as I nearly did)!
Yes the recuperating valve perhaps, I remember TrackcarSpit or whatever he's called these days talking about it. smile

It sounds like there are different specs of master cylinder out there. The slipping clutch could also be caused by installing the wrong type of slave (piston too long) I think. Lots of options to explore, have fun!