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kerb scraper
Spa-Francorchamps


Joined: 25 May 2012
Posts: 374
Location: Hertfordshire

1997 Porsche 993 Carrera 4

PostPosted: Tue Dec 19, 2017 3:05 pm    Post subject: Reply with quote

This really does sound like a clutch problem. If it were the gearbox it seems unlikely that selection of all gears would be affected?
Where is the biting point? Does it seem to be right at the bottom of the pedal travel?
Have you taken the advice already offered i.e. bleed the clutch? With the car on a lift and the undertray removed it takes one spanner, a cupful of fluid and 5 minutes to do. It is however very easy to let the reservoir level drop too low and introduce air if not familiar with the design where the brake and clutch reservoirs are integrated into one. Perhaps this is what happened when the clutch slave and master were changed as you mentioned earlier?

If that doesn't work then I'd be wanting to investigate the clutch actuating fork, clutch cover, release bearing etc for damage or wear.
_________________
1997 C4 Cabriolet, Arctic Silver, black interior, 18" hollow spokes, Bilstein PSS10s, RSRs, 200 cell cats, Mobil 1 sticker, LED to interior. Bergville t-lights.
 
  
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cryddaboy66
Newbie


Joined: 04 Sep 2013
Posts: 9
Location: Madrid


PostPosted: Tue Dec 19, 2017 3:19 pm    Post subject: Reply with quote

kerb scraper wrote:
This really does sound like a clutch problem. If it were the gearbox it seems unlikely that selection of all gears would be affected?
Where is the biting point? Does it seem to be right at the bottom of the pedal travel?
Have you taken the advice already offered i.e. bleed the clutch? With the car on a lift and the undertray removed it takes one spanner, a cupful of fluid and 5 minutes to do. It is however very easy to let the reservoir level drop too low and introduce air if not familiar with the design where the brake and clutch reservoirs are integrated into one. Perhaps this is what happened when the clutch slave and master were changed as you mentioned earlier?

If that doesn't work then I'd be wanting to investigate the clutch actuating fork, clutch cover, release bearing etc for damage or wear.


Thanks for the input, KS. The clutch feels good (although this is my first 911 so I don't have anything to compare it to) and the range of movement would seem to be normal. There is no dragging as far as I can tell; if I depress the clutch at standstill and engage 1st there is no sign of creeping forward. This doesn't surprise me as the clutch and flywheel are brand new, replaced by the dealer before delivery less than 3,000km ago.

However, it hasn't been bled by me - perhaps the next step in this saga...

I have already checked the fluid reservoir and it is good. No signs of leaking and it certainly hasn't needed topping up since I collected the car.

Thanks again Thumb
 
  
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