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Author Topic: Brake fluid change - MOT fail?  (Read 1210 times)

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biggriffin

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Re: Brake fluid change - MOT fail?
« Reply #30 on: 08 May 2019, 17:06:58 »

A little cheat for you all, extract the fluid from the master, and refill with fresh,. Or do it properly and bleed new fluid right thro.
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Kevin Wood

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Re: Brake fluid change - MOT fail?
« Reply #31 on: 08 May 2019, 17:12:17 »

Yes, forgot to say, that before I do a fluid change I syringe the old fluid out of the reservoir as far as possible. This fluid is probably the worst, as it is in contact with air, so you need to repolace it first, or make sure you bleed enough through to ensure it's all gone.

It's less easy to suck all the fluid out of the reservoir section for the rear brakes, as there's a partition in the reservoir that separates the two sections.
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dave the builder

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Re: Brake fluid change - MOT fail?
« Reply #32 on: 08 May 2019, 17:15:49 »

A little cheat for you all, extract the fluid from the master, and refill with fresh,.
won't make your brakes work any better , just fools the MOT tester into giving you a piece of paper to say your car met minimum requirements during the 45 minutes he inspected it *

* unless it's a phone up with the Reg. MOT ,car not present  :P

  do it properly and bleed new fluid right thro.
a much better way  :y
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Re: Brake fluid change - MOT fail?
« Reply #33 on: 08 May 2019, 17:53:37 »

I used to experience brake fluid boiling in my rallying days, the 1960s, have not known it since.
Try a brisk drive across MK.  That'll heat 'em up, and test them thoroughly.
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STEMO

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Re: Brake fluid change - MOT fail?
« Reply #34 on: 08 May 2019, 18:00:09 »

I've never had the brake fluid changed on any car that I've owned.
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TheBoy

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Re: Brake fluid change - MOT fail?
« Reply #35 on: 08 May 2019, 18:10:04 »

I've never had the brake fluid changed on any car that I've owned.
:o
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Re: Brake fluid change - MOT fail?
« Reply #36 on: 08 May 2019, 18:18:11 »

I've never had the brake fluid changed on any car that I've owned.

are you saying you drive the car till the brakes fail and you crash, then buy another  ;D :D
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Andy B

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Re: Brake fluid change - MOT fail?
« Reply #37 on: 08 May 2019, 18:19:26 »

However the mot tester is not allowed to dismantle anything... would taking the cap off be dismantling?..   Brakes were probably crap on the rollers so he checked the fluid itís very hydroscopic and the higher the dot dot 4 dot 5 the more it is. Remember the days of dot3.

Hygroscopic  ;)
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Nick W

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Re: Brake fluid change - MOT fail?
« Reply #38 on: 08 May 2019, 18:25:25 »

I've never had the brake fluid changed on any car that I've owned.


I've never noticed any improvement from changing the fluid. Adjusting or freeing off stuck components ALWAYS makes a difference. A long pedal or poor handbrake are reliable symptoms of such issues that need to be fixed.


Checking for odd brake wear patterns and fluid loss is one of the jobs you do whilst the oil is draining. Actually doing that would be a good justification for the short oil changes recommended here.
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Andy B

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Re: Brake fluid change - MOT fail?
« Reply #39 on: 08 May 2019, 18:29:29 »

You need to replace the fluid in lines and calipers, so you have to bleed each nipple until you get fresh fluid at them all. In this case, I would start at the closest and work round ensuring that the reservoir never runs dry.

And that still doesn't replace the fluid in the ABS pump ..... you need a way of cycling the pump to do so.
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Re: Brake fluid change - MOT fail?
« Reply #40 on: 08 May 2019, 18:29:52 »

I've never owned a new car long enough to have needed to have had the brake fluid changed on any car.
More like...  ::)
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Re: Brake fluid change - MOT fail?
« Reply #41 on: 08 May 2019, 19:16:38 »

I've never owned a new car long enough or with a high enough mileage to have needed to have had the brake fluid changed on any car.
More like...  ::)
Fixed.  ::)
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Re: Brake fluid change - MOT fail?
« Reply #42 on: 08 May 2019, 19:22:03 »

I've never owned a new car long enough or with a high enough mileage to have needed to have had the brake fluid changed on any car.
More like...  ::)
Fixed.  ::)
Brake fluid change is a time thing ..... not distance/mileage   ;) ;)
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STEMO

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Re: Brake fluid change - MOT fail?
« Reply #43 on: 08 May 2019, 19:23:17 »

I've never owned a new car long enough or with a high enough mileage to have needed to have had the brake fluid changed on any car.
More like...  ::)
Fixed.  ::)
Brake fluid change is a time thing ..... not distance/mileage   ;) ;)
Not for me it isn't  ;D
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dave the builder

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Re: Brake fluid change - MOT fail?
« Reply #44 on: 08 May 2019, 19:25:31 »

Uncle Stemo don't use his brakes much anyway
the locals all move out of his way , out of FEAR respect  :y
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