Brake problem

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deltic
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Brake problem

Post by deltic » Wed Sep 11, 2019 10:08 pm

Probably not not something that can be diagnosed online but I'll ask anyway just in case anyone has any bright ideas, particularly given there is a little urgency as I'm heading off on the Challenge three weeks tomorrow.

Earlier this year I had the LHM, front and accumulator spheres changed at which point there was some travel in the brake pedal and therefore some delay in the brakes working. On bleeding the brakes again I initially thought that there was some improvement but then though better of it. The brakes work fine but I do not like that delay! Thus, I asked a local garage to try bleeding the brakes again, however they were concerned that there might be leak at or near the brake doseur/master cylinder and not being terribly au fait with Citroen hydraulics they didn't want to open a can of worms (or octopuses?!) and do any more work on the car. They seemed to think that it could be the doseur and/or a leak causing the problem. Strangely enough driving home from the garage this evening the brakes seemed to feel closer to normal...

As I was already suspicious that there might be a leak do you think that the best course of action might well be to change both the doseur and octopus bearing in mind both are at least 17 years old if not original?

Thanks in advance...
1991 BX GTi Auto, grey, 133,000 miles (2015 & 2017 Citroen Classic Challenge veteran)
2006 C4 VTR+ 2.0 Coupé, silver, 60,000 miles

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Jaba
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Re: Brake problem

Post by Jaba » Tue Sep 17, 2019 10:02 pm

Any progress on this. Did they know the correct procedure for bleeding BX front brakes ?
Leaks are usually quite easy to locate using cleaning spray when underneath. No need for guesswork.
The Joy of BX with just one Citroën to my name now. Will I sing Bye Bye to my GTI or will it be Till death us do part.

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deltic
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Re: Brake problem

Post by deltic » Tue Sep 17, 2019 10:15 pm

Thanks for asking, not entirely sure! That said the owner of the garage had previously owned and worked on BXs. To be honest I could've done it myself as I have previously done complete fluid changes...

Given that I have to be on the 09.10 Dover - Calais ferry on 3 October for the Challenge it's booked in with a rather more knowledgeable garage later in the week. I'll keep you posted.
1991 BX GTi Auto, grey, 133,000 miles (2015 & 2017 Citroen Classic Challenge veteran)
2006 C4 VTR+ 2.0 Coupé, silver, 60,000 miles

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Re: Brake problem

Post by Jaba » Wed Sep 18, 2019 11:37 pm

Enjoy the Challenge. Unfortunately I have had to cancel.
The Joy of BX with just one Citroën to my name now. Will I sing Bye Bye to my GTI or will it be Till death us do part.

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deltic
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Re: Brake problem

Post by deltic » Thu Sep 19, 2019 9:02 pm

That's a shame John, hopefully it won't be the last. Only two weeks to go.
1991 BX GTi Auto, grey, 133,000 miles (2015 & 2017 Citroen Classic Challenge veteran)
2006 C4 VTR+ 2.0 Coupé, silver, 60,000 miles

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Re: Brake problem

Post by womble3go » Thu Sep 19, 2019 9:43 pm

Hi, When my does doseur was found to be leek, it was leaving a puddle by the O/F wheel and was also doing the same on the drivers mat.
The brakes didn't seam any different with the leek just was leaving its mark of were it had been. Hope that some help.
Kevin

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deltic
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Re: Brake problem

Post by deltic » Thu Sep 19, 2019 11:00 pm

Thanks Kevin. That's sort of where one of leaks is, indeed the main return to the doseur has been found to be split. So that and the doseur will be replaced.
1991 BX GTi Auto, grey, 133,000 miles (2015 & 2017 Citroen Classic Challenge veteran)
2006 C4 VTR+ 2.0 Coupé, silver, 60,000 miles

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Re: Brake problem

Post by womble3go » Fri Sep 20, 2019 7:05 pm

Mine was split as well the jubilee was a pig to get off, I changed mine as it was leeking on the inside, was an change once I took off the top engine mount with a jack under the engine. Then pulled it forward with a ratchet strap till it was just about to hit rad give room to work.

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Re: Brake problem

Post by NeilGP » Thu Sep 26, 2019 8:51 pm

I seem to remember that on later BX's there is a damper that went between the brake pedal and the dosier value. This to make the brake pedal softer.
Is it possibly this that is damaged. I think people replaced this with a bolt to keep direct contact between pedal and dosier.
Neil
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