718 GT4 clutch slipping is a thing... - Page 2 - Boxster/Cayman - PistonHeads UK

8700 miles, clutch is on its way out. Anyone else yet? I say this as I guarantee there will be more as owners clock up the miles. Ninemeister have a solution. https://youtu.be/T4NHhw-DsCY

Many full throttle standing starts/heavy track use? I've done 9k+ miles in my car on the standard clutch and using a LWFW from 1800 miles - no issues.

Second owner, I've only done the last 800 miles. No hard launches, lots of mechanical sympathy. Who knows with the previous owner though. Only discovered the problem at Goodwood 2 weeks ago.

I think it may have had a hard early life then? Unless I'm just a super mechanically sypathetic driver!

I really doubt the clutch has worn out in that few miles. I'm with the other commenter on the vid, that there's some problem with the release mechanism. If the clutch HAS worn out, I still think it's due to some fault that has been allowing it to slip slightly, although I'd expect you to have noticed that.

I'll put my speculation hat on and say that part of the problem 'might' possibly be the torque limiter in the clutch slave cylinder. This puts a very small delay on clutch release via a moveable valve disc which controls fluid flow in the line if you pop the clutch, such as foot slipping off the clutch. It is to stop shock loading the transmission. If its a bit lazy in some cars it could possibly encourage more rapid clutch wear. How on earth would you rule that in or out though? I fear that Porsche will pull my pants down on this, but I'll try to stay positive. Waiting to hear back if they can pre-approve warranty repair based on the video.

Does the pedal return to you as normal during the slipping... so that that pedal is up and you are effectively completely off? Or is it a slow return on the pedal also?

I'll check this and report back

I had the same experience if I rushed the change in a 4.0 GTS at the silverstone Porsche experience centre. Not quite as bad but if I rushed it the revs would build like that with clutch fully up. I’m sure that car will have had its clutch absolutely rinsed as it was a demo track hack but I agree it’s a thing.

I had this happen on the Porsche Experience Day (PEC). This happened on a hard launch and the clutch completely disengaged so the engine was free revving. I asked the instructor about this and he says that the manual 718s have a clutch protection system in place where by if you don't fully engage the clutch or, the the PCM detects a certain amount of slippage then the system will disengage the clutch until you come completely off the power and then back on. This happened to me in the morning, and I drove the car for the rest of the day pretty hard making sure my gear changes were clean and I wasn't hovering over the clutch pedal and I never experienced it again, could it be this you are experiencing?

Yes I can drive around it. When it started doing this at Goodwood, two weeks ago, I slowed down the shifting and the slip stopped, but you shouldn’t have to. My ‘eager’ shifting is not rushed but the clutch really doesn’t like it one bit. Those nice people at Ninemeister are putting an uprated Sachs clutch in it next month. In the meantime I have another track day at Goodwood in a couple of weeks which I hope I can nurse the clutch through. To add: Pedal travel is normal and Porsche did pull my pants down. Self funding a clutch after 800 miles of ownership *sigh* Edited by maximtaylor on Tuesday 14th June 19:25

Latest update, I reached out to Porsche Chester to see if my few months of ownership and 800 miles counts for anything. No it does not.

Clutch is a wear item I think, so not covered under warranty...

Is it slipping under load when clutch is ‘up’ or just when changing gear? Has an OPC tech reproduced it?

arcamalpha said: Is it slipping under load when clutch is ‘up’ or just when changing gear? Has an OPC tech reproduced it? First part of your question is all explained in the video description. Second part - I can reproduce it at will, hence the video. OPC tech could but not legally on the road due to speed.

Twinfan said: Clutch is a wear item I think, so not covered under warranty... I get that, but at what point does 'reasonable' play a part. If you leave the forecourt and it slips the next day...next week.....next month? I don't think this is defined anywhere?

maximtaylor said: I get that, but at what point does 'reasonable' play a part. If you leave the forecourt and it slips the next day...next week.....next month? I don't think this is defined anywhere? It's not defined, it's open to interpretation to allow common sense to prevail I guess. Isn't there some legal "thing" about an issue coming up within 6 months (?) after purchase that it was probably there at the point of sale and so you could use that argument? May be worth a quick chat with an expert on these things.

Twinfan said: It's not defined, it's open to interpretation to allow common sense to prevail I guess. Isn't there some legal "thing" about an issue coming up within 6 months (?) after purchase that it was probably there at the point of sale and so you could use that argument? May be worth a quick chat with an expert on these things. You absolute Gem Consumer Rights Act 2015. Under 6 months. Breach notice just sent to dealer.

maximtaylor said: You absolute Gem Consumer Rights Act 2015. Under 6 months. Breach notice just sent to dealer. Nice one! Funny what you can dig out of the back of the brain sometimes. Let us know how you get on, but I think that might do the trick

maximtaylor said: You absolute Gem Consumer Rights Act 2015. Under 6 months. Breach notice just sent to dealer. Yes, absolutely. Great to see consumer law might act in favour of the consumer. If I remember right, for the first 6 months of ownership it's up to the seller to prove there wasn't a fault at the point of sale. After that it's up to the buyer to prove that there was. I think they have to sort it out for you, warranty item or not. Liam

A quick update, or lack of it: Carl Hazelton, Dealer Principle at Porsche Chester really doesn't understand the Consumer Rights Act 2015. I've done my best to spoon feed his legal obligations to him, but the only reply he has is "normal procedure is to claim on warranty"......yeah...on a non warrantable item! Motor Ombudsman is on about a 6 month delay on arbitration, so looks like I'm in for the long haul on getting money out of them.

This is really poor, I would and sure all of us here would be interested on how you get on. Good luck!

If you've had the car under three months, and the dealer says he'll fix the clutch under the standard 3 month used car warranty, watch out. If it doesn't work you may lose your statutory right to reject the car. Under CPA 2015 they only get one chance to repair before you can reject. Under a warranty it appears this isn't the case. Read more here, and note the article is four years old so do more research if you need to: https://www.lawgistics.co.uk/blog/articles/warrant...

Newsflash! Carl Hazelton from Porsche Chester has reached out to me and agreed to a FOC fix, including car transport.

Great news!! A good outcome for all I'd say.

maximtaylor said: Newsflash! Carl Hazelton from Porsche Chester has reached out to me and agreed to a FOC fix, including car transport. Result!