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Can anyone make any sense of this. |
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routemaster1
 
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   Member No: #574
Joined: Jul 08 2007Location: Dorset |
As we have several cars in our family I am a member of several forums. This is a post from one of the other forums. I have copied this verbatim but I have removed some of the details. 'Hi our xxxxx xxxxx 2018 has just failed it's MOT. The brake fluid cap was missing according to the garage and this has contaminated the brake pipes with water and corroded the drivers rear brake disc. Not sure how this has happened but this MOT was at xxxxxx and they can't do the repair but they said it would be expensive as the brake pipes would need to be replaced along with the servo and and the rear brake disc. Would anyone have any idea how much this might cost roughly as I'm worried it will be really pricey! Thanks for your help'. Any comments? |
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DeuxChevaux
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 Member No: #16472
Joined: Nov 21 2010Location: North Norfolk UK |
Is the brake cylinder cap missing? If yes then replace, bleed brakes and resubmit to another garage, sounds like rubbish as garages do mot's to get repair work. On the other hand is the car that is subject of the mot a complete bag if [%*^#@!] - in which case ..... Difficult when we have only one side of the picture |
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routemaster1
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Member No: #574
Joined: Jul 08 2007Location: Dorset |
DeuxChevaux wrote ... Is the brake cylinder cap missing? If yes then replace, bleed brakes and resubmit to another garage, sounds like rubbish as garages do mot's to get repair work. On the other hand is the car that is subject of the mot a complete bag if [%*^#@!] - in which case ..... Difficult when we have only one side of the picture 2018 car, probably first MOT. |
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skorpion
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 Member No: #55124
Joined: Nov 28 2019Location: West Yorkshire |
routemaster1 wrote ... As we have several cars in our family I am a member of several forums. This is a post from one of the other forums. I have copied this verbatim but I have removed some of the details. 'Hi our xxxxx xxxxx 2018 has just failed it's MOT. The brake fluid cap was missing according to the garage and this has contaminated the brake pipes with water and corroded the drivers rear brake disc. Not sure how this has happened but this MOT was at xxxxxx and they can't do the repair but they said it would be expensive as the brake pipes would need to be replaced along with the servo and and the rear brake disc. Would anyone have any idea how much this might cost roughly as I'm worried it will be really pricey! Thanks for your help'. Any comments? New brake fluid cap. Renew brake fluid. Brake fluid doesn't come into contact with a brake disc, this sounds very iffy to me. |
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vexorg
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 Member No: #48843
Joined: Jul 06 2017Location: Scotland |
What was the actual fail? I didn't think the brakes could fail other than leaks, efficiency, or very worn discs/pads Sounds like they didn't want to work. Bleeding brakes on a new car should be a real easy job as there's no risk of snapping the nipples. |
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Richard_C
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Member No: #46470
Joined: Oct 11 2016Location: Cambridge |
Once upon a time you could get an MOT done, and if it was 'iffy' try again at another garage which may or may not find the same faults, other faults or no faults. Now it's all online so as soon as the new testing centre puts the registration number in the chences are they will be able to see what the first one failed it for. It would be a brave tester that over ruled the original. As its 2018, it is likley to be the first or second MOT. You can go online and see the test history, not just whether it is valid but the actual test certificate by clicking the 'view certificate' link. That will have reasons for failure and any advisories. Search for 'DVLA check MOT history', make sure you are on an official .gov site, See what it says. The disc corrosion should be totally unconnected with the brake fluid, and it is a fail if the efficiency or strength is substantially weakened. Rear discs are prone to corrosion especially if the car isn't often driven loaded or hard: the rear brakes do little work as the brake pressure is distributed in oart according to front/rear load. If the car is that young it might be covered by some form of warranty even if pre-owned: the official Citroen extended warranty/breakdown recovery cover and the used car warranty both include an MOT failure element. Not sure that helps - they don't cover wear and tear and a corroded disc would come under that definition, and I doubt any insured cover would pay out if the root cause was leaving a critical component off (the cap). I know people don't look under the bonnet very often, but for a cap to be missing for long enough to cause a corrosion problem in the brake pipes sounds a bit careless to me. Also hard to understand why the tester thinks the pipes have corroded from the inside - surely they can only see external corrosion. |
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routemaster1
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Member No: #574
Joined: Jul 08 2007Location: Dorset |
Unfortunately the original poster did not actually say what the fail certificate said. If it only failed for a missing cap and a corroded disc, should be an easy fix. It seems that the people who did the MOT said that the brake lines and servo needed replacing, but no mention of ABS block or calipers. | ||
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vexorg
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Member No: #48843
Joined: Jul 06 2017Location: Scotland |
Richard_C wrote ... I know people don't look under the bonnet very often, but for a cap to be missing for long enough to cause a corrosion problem in the brake pipes sounds a bit careless to me. Also hard to understand why the tester thinks the pipes have corroded from the inside - surely they can only see external corrosion. I have my doubts over corrosion due to the cap off under any time limit, the water is disolved in the fluid, not suspended, and you need air for the corrosion. |
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BigJohnD
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  Member No: #82
Joined: Jan 22 2007Location: Hoylake |
DeuxChevaux wrote ... Is the brake cylinder cap missing? If yes then replace, bleed brakes and resubmit to another garage, sounds like rubbish as garages do mot's to get repair work. Agreed, though how you lose the cap is a mystery to me. |
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vexorg
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Member No: #48843
Joined: Jul 06 2017Location: Scotland |
It's possible during a service, someone undoes the cap to check the fluid and get distracted, though doubtful these days. | ||
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