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Clutch pedal slamming to the floor

Discussion in 'Leon Mk3' started by matt_s, Feb 12, 2019.

  1. matt_s

    matt_s 4 8 15 16 23 42

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    I've just been out to use the car and the clutch pedal slammed to the floor as soon as i touched it. I can hook it back up again. Any ideas on what the issue could be? The brake fluid reservoir is at about a quarter the way up from the min line and there are no drips under the car.

    Is there anything I can check? The car is a 2013 Leon FR TDI.

    Cheers in advance.

    Matt
     
  2. LouG

    LouG Active Member

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    If it goes to the floor without resistance you have either;
    air in the hydraulic system,
    master or slave cyls have failed,
    pressure plate has collapsed.
    clutch throwout arm has broken,
    Master cyl push rod has failed.
    If you have some mechanical knowledge you can check these things, but will need someone to help.
     
  3. matt_s

    matt_s 4 8 15 16 23 42

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    Looks like it's having a trip to the garage then. I replaced the heater matrix but I don't have tools or knowledge to do that stuff.
     
  4. Ryan leckenby

    Ryan leckenby Active Member

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    This happened to mine there was no leaks I replaced the master cylinder which comes with the pedal. Didn’t fix it .

    Took the gearbox out to have a look at the slave no leaks , replaced it now it’s fine even though there was no leak
     
  5. Jaco2k

    Jaco2k AWD FTW

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    This might be a stupid question, but wouldn't a master cylinder failure also affect the brake pedal?
     
  6. matt_s

    matt_s 4 8 15 16 23 42

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    Had another look. The brake pedal is normal, not soft. I can't get it in gear with the engine running. Couldn't do much more than that as it was dark and I've not even bought a jack yet as the car didn't had one.

    Sent from my SM-G960F using Tapatalk
     
  7. Ryan leckenby

    Ryan leckenby Active Member

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    No mate
     
  8. Ryan leckenby

    Ryan leckenby Active Member

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    If you pump the pedal does it get any pressure ?
     
  9. Jaco2k

    Jaco2k AWD FTW

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  10. Ryan leckenby

    Ryan leckenby Active Member

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    That’s the old type , the new master cylinder now comes with the pedal and you have to remove the knee airbag I paid just under £300 and that was trade and it didn’t fix it so I replaced slave and it fixed it
     
    Jaco2k likes this.
  11. matt_s

    matt_s 4 8 15 16 23 42

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    The garage have got back to me. The slave cylinder gas gone so they have quoted me to replace the clutch and flywheel. Is the slave cylinder part of the clutch kit and would that have knackered the clutch and flywheel?

    Sent from my SM-G960F using Tapatalk
     
  12. Ryan leckenby

    Ryan leckenby Active Member

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    Is the flywheel rattling ? If it is it could have damaged it but mine was fine just Slave cylinder gone on mine it’s a separate
    Part as it doesn’t come in a three piece kit
     
  13. DEAN0

    DEAN0 Old Git

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    SOME clutch kits contain the slave cylinder.

    Yes - if the slave has leaked - it has probably contaminated the clutch/flywheel surfaces.
     
  14. LouG

    LouG Active Member

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    No.
     
  15. LouG

    LouG Active Member

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    There is no need to replace the clutch and flywheel as a matter of course. They may need to be inspected for damage/contamination, but if you have not lost a lot of fluid that's unlikely. If it was mine, I'd replace the slave cyl and see if that remedies the problem.
    This sounds like a bullshit alert.
     
  16. matt_s

    matt_s 4 8 15 16 23 42

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    There was a rattle when accelerating, sounded like a loose heat shield and the occasional clunk just after I started reversing.
     
  17. matt_s

    matt_s 4 8 15 16 23 42

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    Luckily they are a good garage, the rear brakes were binding on my old car and they thought i had a seized rear caliper. It ended up being the pads rusted to the carrier so they fixed that and didn't replace the caliper.
     

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