Inrev

I started to experience a sticky clutch pedal issue with the car on the track, only happens at the end of the track day (last 2 sessions). Starts once the car is warm after 2-3 laps in those sessions and gets progressively worse.

- I come into corner and brake/downshift.
- Gear engages fine, clutch pedal comes slighlty up above friction point but won't pop all the way back up.
- Will not do it when accelerating.
- So far I've done 32 track days with my car, this issue has only happened the last 4 days. It has happened to various degrees. Each time I've had the brakes and clutch bled hoping it wouldn't happen the next time. Complete flush of brake fluid done too.
- Used gulf 1000 and Super Blue and no change in behavior.
- Brake pedal is still firm, now that the car is cool the clutch works fine.

My guess is a bad slave or master cylinder. The problem is I can't reproduce it on the street and both dealer and indy shop tell me they find nothing wrong with hydraulics.

Any way I can reproduce it or test it so that I find out what it is?

extanker

maybe try motul fluid and look up a product called cool sleeves {?} they used to be used on any type /size line that needed thermal protection.good luck .i think heat is your problem

Macster

Agree. Heat is the #1 suspect.

Inrev

Tried looking for the product you mention but no luck. Now after running and letting it sit for a bit there's a small puddle of brake fluid that comes out. Only able to do it if the car is running, if it'S not running pumping the brakes/clutch pedal does not make a new leak.

extanker

i guess back to a shop........not the ones that could find nothing wrong. as for cool sleeves....try a speed shop or summit racing/jegs etc. the real old days we would wrap fuel lines in al. foil

gt2r

I had a similar problem. It only happened 1 time when it was hot. Not on any other track day. I've read about this on other forms as well. I was able to pull the pedal up to its regular location and it didn't happen the rest of the day. Never figured out the reason for this