Jerky clutch pedal

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simonjrwinter
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Joined: Sun Jan 03, 2010 8:25 pm
Location: Upminster, Essex.

Jerky clutch pedal

Post by simonjrwinter » Mon Sep 07, 2020 1:52 pm

When my car gets hot, I’ve noticed the clutch pedal gets a bit jerky (sticky?) when I let it up from a standstill or pushing down when coming to a stop. It’s not awful but I was wondering what the cause might be. All other times, it’s lovely and smooth. If it gets jerky and I turn the car off, I can push it down and let it up and it seems nice and smooth, but with the engine running, “sticky”
The slave is close-ish to the exhaust but not right next to it.
Any ideas?
Ford 302, hydraulic clutch, T5 gearbox, 1,900 miles.
Simon
TR6 (V8) Hawk 289 FIA (V8) Doing my bit for global warming.

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clive
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Re: Jerky clutch pedal

Post by clive » Mon Sep 07, 2020 3:42 pm

Is the slave cylinder end of the clutch fork clearing the chassis tube?
Cheers, Clive.

(If I'm not here I'm in my workshop or on the golf course!)

simonjrwinter
Posts: 765
Joined: Sun Jan 03, 2010 8:25 pm
Location: Upminster, Essex.

Re: Jerky clutch pedal

Post by simonjrwinter » Mon Sep 07, 2020 3:59 pm

Yes, no problem there.
TR6 (V8) Hawk 289 FIA (V8) Doing my bit for global warming.

simonjrwinter
Posts: 765
Joined: Sun Jan 03, 2010 8:25 pm
Location: Upminster, Essex.

Re: Jerky clutch pedal

Post by simonjrwinter » Mon Sep 07, 2020 5:44 pm

https://youtu.be/MdEozFXqpxA
Pretty smooth when cold, no interference issues.

Simon
TR6 (V8) Hawk 289 FIA (V8) Doing my bit for global warming.

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StewbieC
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Re: Jerky clutch pedal

Post by StewbieC » Mon Sep 07, 2020 7:22 pm

The only difference with the engine not running is the fly wheel and clutch aren't spinning.
You might need to split the engine and box to make sure everything is still tight. Plenty of possible causes for clutch judder. I always use blue loctite or Arp thread sealant on clutch and flywheel fastenings.
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Stu
Hawk 289, maximum smiles per mile..

simonjrwinter
Posts: 765
Joined: Sun Jan 03, 2010 8:25 pm
Location: Upminster, Essex.

Re: Jerky clutch pedal

Post by simonjrwinter » Mon Sep 07, 2020 7:41 pm

Thanks Stu,

Pretty sure there’s nothing loose in that department either. On my TR6 (fitted with a Rover V8) I used to get something similar. This was cured by relieving the edges of the release bearing release sleeve to enable it to move smoothly. I wonder if this is something similar?
Simon
TR6 (V8) Hawk 289 FIA (V8) Doing my bit for global warming.

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