Make a donation

Author Topic: Brake/clutch fluid boiling -symptoms  (Read 1626 times)

Offline Johnsy

  • Always Involved
  • ****
  • Thank You
  • -Given: 11
  • -Receive: 7
  • Posts: 272
Brake/clutch fluid boiling -symptoms
« on: May 09, 2016, 04:34:22 pm »
is it possible that boiling brake/clutch fluid would give me a soft/lower clutch pedal?

Iv got the ttrs brembo s fitted with £50 pagid pads on 340mm discs,standard fluid ( mk2 LCR stage1) I was out up Alston having a hoon with my mates, it's a roller coaster of a ride on the way there from sacriston, went down/up the pass, at the bottom the clutch pedal went a bit limp and the bite was near the floor same again at the top,parked up and went down in my mates Meg , thinking it can't be the clutch as its not slipping, got me thinking the brake fluid is coming upto 4yr old and needs refreshing ,
Anyway ordered some Motul rbf 660 fluid from opie which arrived today so that's getting swapped out on Wednesday, so I'll know for sure .

Thought this might have come up before but couldn't anything

Just to add the pedal/bite  didn't feel so bad after the car had a chance to cool,

Offline ChazGTI

  • Always Involved
  • ****
  • Thank You
  • -Given: 3
  • -Receive: 2
  • Posts: 54
Re: Brake/clutch fluid boiling -symptoms
« Reply #1 on: May 09, 2016, 05:06:11 pm »
4 years is well over the interval it should be changed. Think it should be more like 2- 2.5 years.
Since water (and others stuff) contaminates it over time it makes sense for the bite point to change, but not so suddenly.

Check your bleed nipples to make sure they're in good condition when you change the fluid. I need to replace my rear ones myself.

Offline Johnsy

  • Always Involved
  • ****
  • Thank You
  • -Given: 11
  • -Receive: 7
  • Posts: 272
Re: Brake/clutch fluid boiling -symptoms
« Reply #2 on: May 09, 2016, 05:44:54 pm »
4 years is well over the interval it should be changed. Think it should be more like 2- 2.5 years.
Since water (and others stuff) contaminates it over time it makes sense for the bite point to change, but not so suddenly.

Check your bleed nipples to make sure they're in good condition when you change the fluid. I need to replace my rear ones myself.

Im not 100% about the age of the fluids as iv only had the car about 14mth, and I'm not sure if they changed the fluid when the brakes where fitted or just bleed them . I wouldn't say it happened suddenly as the symptoms kinda started a few weeks ago and I suspected a weeping slave cylinder but it sorted itself out, till that 4hr ride out with the lads last bank hol Monday,


Offline Johnsy

  • Always Involved
  • ****
  • Thank You
  • -Given: 11
  • -Receive: 7
  • Posts: 272
Re: Brake/clutch fluid boiling -symptoms
« Reply #3 on: May 12, 2016, 10:26:56 pm »
Just to tie this thread up, a simple clutch fluid bleed solved my low bite and spongy pedal out  :happy2: