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Thread: New brake fluid - is it usually a little soft just after?

  
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    New brake fluid - is it usually a little soft just after?

    Just curious, if the brake fluid has been changed, is it usual to take a few days to firm up?

    Had mine changed today (only took 1/4 litre?), and the pedal is mushier than when it went in, though in my mind I seem to recall it takes a little time to firm up?

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    should be firm from the word go, must have air in the system somewhere

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    Kind of what I was thinking, but there are 'myths' about too.

    I expected them to need more than 1/4 litre too, I'll pop back in this week and ask them to re-bleed it. Can't say the brakes have ever been firm since the 280mm front discs/rear disc conversion was done. My wife's Zafira has the same size discs on and hers (albeit ABS) is amazingly better, and I'd expect mine to be comparable. Same garage did her brakes too...

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    Its important to ensure that all the pipe fittings to the calipers are clean and flush fitting, ant bad surface can cause problems with air in the system. Might be worthwhile checking each line and pipework to ensure everything is clean, dirt free and operational.

    Then I would check the bleed sequence and re-bleed.
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    Cheers Mark - I'll get it back to the garage and see what they say, I'd exect them to have been happy with the pedal feel before passing it back, don't fancy paying more labour at this stage for another bleed, don't mind paying for them to check the caliper brake pipe fitments, perhaps re-doing the crush washers again, then a 'free' bleed again.

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    ¼ Litre?

    I stuck just short of 2 through mine when I last bled/changed the fluid, just to make sure it was 100% new fluid loveliness

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    Yeah I was slightly 'amazed' they said 1/4 was enough, we used almost a litre when we (you!) changed the front calipers.

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    Quote Originally Posted by Ffoeg View Post
    ¼ Litre?

    I stuck just short of 2 through mine when I last bled/changed the fluid, just to make sure it was 100% new fluid loveliness
    i used about the same geoff, i did a mini at work a couple of weeks ago and it used around half a litre per corner.

    im suprised you didnt do this your self tho chris, would of probs saved you all this hassel.

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    Yup.. and when I used those 2 litres, I'd stuck braided hoses on and was going from DOT4 to 5.1... so they would have been some air in there. But even if I was just doing a change of fluid I'd still have used the same amount.

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    Hassle depends on the families perspective

    Brake fluid/oil/LPG filter should have been done but the LPG filter was the wrong size, hey ho, let's see how they do 2nd time around on the brakes!

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