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friction
Newbie
Joined: 15 Aug 2005
Posts: 13
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Mon Aug 15, 2005 7:20 am |
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asked this on cliosport, but thought i'd ask on here aswell.
I've got a 99 1.2 Clio (D7F), non-ABS, and last night braking, approaching a roundabout, my brakes suddenly stopped biting and the pedal sunk to the floor. After testing a couple of times after almost going through the roundabout and a car going round it at the same time, I found that the brakes work until braking heavy, then the pedal sinks to the floor and the braking is near non-existant (the brakes work with a little pressure on the pedal though)
after checking it today, i've found that my brake fluid is higher than max, which it wasnt last week when i last had a look...
any idea's on whats wrong? |
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schakal
Spammer
Joined: 27 Jul 2004
Posts: 5717
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Mon Aug 15, 2005 7:26 am |
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air must be trapped somewhere pushing the brake fluid up in the system thus your fluid level is higher.
not that i know a lot about brakes or ABS  |
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mals
Self Proclaimed Comic Genius
Joined: 04 Jul 2004
Posts: 3482
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Mon Aug 15, 2005 7:28 am |
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Chris H should be able to help no doubt he will be back here soon! |
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schakal
Spammer
Joined: 27 Jul 2004
Posts: 5717
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Mon Aug 15, 2005 7:31 am |
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| mals wrote: |
| Chris H should be able to help no doubt he will be back here soon! |
thats very creative of you mals  |
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Chris H
Forum Moderator
Joined: 02 Mar 2004
Posts: 19978
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Mon Aug 15, 2005 8:27 am |
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either the rear wheel cylinders are buggered (commoen prob about a tenner a side) or the master cylinder is gubbed. |
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friction
Newbie
Joined: 15 Aug 2005
Posts: 13
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Mon Aug 15, 2005 8:36 am |
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a rear wheel cylinder was replaced two or three weeks ago for the mot though. When that was damaged, it was a different braking experience, they were just poor. Now they bite under slight pedal pressure, then with a little more pressure the pedal goes from stiff(ish), to sinking to the floor - and thats when the brakes basically stop biting at all.
Im just wondering why, if it was a rear cylinder, this would happen (surely it'd just be crap constantly), and why the brake fluid level would be well above max...
anything else it could be, before putting it down to the master cylinder? |
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Chris H
Forum Moderator
Joined: 02 Mar 2004
Posts: 19978
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Mon Aug 15, 2005 8:39 am |
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because the harder you press the more pressure goes to it and seeps by the seal.
Its either that or the master cylinder. |
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friction
Newbie
Joined: 15 Aug 2005
Posts: 13
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Mon Aug 15, 2005 8:45 am |
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cool, cheers mate, i'll have a look!
not trying to be awkward though, but i still dont understand why the brake fluid level would go up, and not down if it was seeping through the seals? |
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Chris H
Forum Moderator
Joined: 02 Mar 2004
Posts: 19978
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Mon Aug 15, 2005 8:49 am |
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air will be gettign pulled in.
But also make sure theres no water getting into the resovoir. Through a bonnet vent, or left off/not correctly fitted seal etc. |
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friction
Newbie
Joined: 15 Aug 2005
Posts: 13
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Mon Aug 15, 2005 8:53 am |
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thanks again
could this also happen from having 6 year old brake fluid? (i've got no idea how old it is, thats why im asking) |
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Chris H
Forum Moderator
Joined: 02 Mar 2004
Posts: 19978
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Mon Aug 15, 2005 8:55 am |
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not as such no, but get it changed.
Scottish are ye? Well if you want the car looked at bring it over to me, just let me know. |
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friction
Newbie
Joined: 15 Aug 2005
Posts: 13
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Tue Aug 16, 2005 7:32 am |
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cheers for the offer chris, had a look today and its definetly the rear n/s wheel cylinder  cheers mate! |
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Chris H
Forum Moderator
Joined: 02 Mar 2004
Posts: 19978
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| Posted:
Tue Aug 16, 2005 8:04 am |
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damn I'm good  |
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