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Author Topic: Mk2 Galaxy- Soft brake pedal- going to the floor  (Read 17706 times)

Offline martcool

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Mk2 Galaxy- Soft brake pedal- going to the floor
« on: February 03, 2015, 06:53:38 PM »
hi there can u help pls i have a 52 galaxy tdi and last night the brakes were ok i went out to day and my foot goes to the floor i only just stops if u pump it it goes a bit hard but then back to the floor i looked at the brake fluid that was a bit low filled it up sill the same it will stop but the pedal is on the floor thanks for any help u can give martin
« Last Edit: February 04, 2015, 06:32:10 PM by insanitybeard »

Offline insanitybeard

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Re: brakes
« Reply #1 on: February 03, 2015, 07:00:00 PM »
Howdy!

Your problem sounds like the brake master cylinder (or seals within it) may be on the way out, though it may be worth taking a look at the brake hoses and calipers to make sure you don't have any leaks there. If the master cylinder is failing, you'll need to replace the whole thing, you can't repair it.
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Offline martcool

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Re: brakes
« Reply #2 on: February 03, 2015, 07:11:30 PM »
ok thanks i have a look over it tomorrow if its the  brake master cylinder do u no how much they are and are they ok to fit new one cheers m8

Offline insanitybeard

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Re: brakes
« Reply #3 on: February 03, 2015, 07:19:27 PM »
Before condemning the master cylinder, just how low was the fluid level? If the reservoir was empty when you checked it then air could have got into the system causing a soft pedal. If the reservoir wasn't empty then I'd say the master cylinder would be prime suspect as long as there are no other fluid leaks from the calipers or brake lines.

If the cylinder needs replacement, it's not the nicest of jobs because it's tucked away at the back of the engine bay under the bulkhead. Places like GSF and Euro car parts should be able to supply you one if you need it, but make sure you get the correct part because there may be a few options.
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Offline martcool

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Re: brakes
« Reply #4 on: February 03, 2015, 07:28:16 PM »
hi when i looked to day it looked like there was nothink in it no  fluid cheers

Offline Chrispb

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Re: brakes
« Reply #5 on: February 03, 2015, 09:19:54 PM »
You need to find where the fluid has leaked from, check all the calipers pipework and ABS pump (if fitted)
Look around the base of the master cylinder and servo for fluid, also if you have manual transmission check clutch master cylinder and slave cylinder tell tale sign is fluid dripping from gearbox bell housing for the latter.
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Offline martcool

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Re: brakes
« Reply #6 on: February 04, 2015, 04:28:37 PM »
hi there i have had good look the only place i can see wet of oil is the back drivers side  caliper but it looks ok on the brake side but it looks like its bin leaking from the handbrake side i have take it all of thats were it looks like do u think this is right all the disks have nothink at all on them cheers

Offline insanitybeard

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Re: brakes
« Reply #7 on: February 04, 2015, 04:51:13 PM »
The seals failing on the handbrake mechanism in the caliper could certainly be the cause of the problem (and I don't think it's that uncommon), if you get somebody to apply the brakes with the engine running (so you've got servo assistance) whilst you look at the leaking caliper you should be able to see how badly the fluid is leaking out. Replacement calipers are available fairly cheaply on  [eBay], I'd rather replace a caliper than a master cylinder!
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Offline martcool

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Re: brakes
« Reply #8 on: February 04, 2015, 05:02:17 PM »
hi there i did get the miss to press the brake but did not see it coming out but the car was not running so may be thats y do u no i can not get the pipe out of the caliper its a rubber pipe with a 14mm nut it just will not undo any iders thanks

Offline insanitybeard

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Re: brakes
« Reply #9 on: February 04, 2015, 05:17:51 PM »
I would think the leak would need to be fairly substantial to cause the pedal to drop to the floor unless it's a slow leak which has over time caused the fluid level to drop until the the reservoir has emptied therefore allowing air into the master cylinder. Don't go trying to remove the caliper until you're sure it's at fault! Do you have a decent brake pipe spanner you can use? This should help get a decent grip on the union and prevent it rounding off when you try to undo it. If it's tight you could try a bit of penetrating oil and/or maybe gentle heating of the caliper or maybe some freeze spray on the union to aid undoing it, especially if it's corroded.
« Last Edit: February 04, 2015, 06:22:47 PM by insanitybeard »
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Offline martcool

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Re: brakes
« Reply #10 on: February 04, 2015, 05:26:13 PM »
hi there there was a lot of fluid run down ever were and the back of the caliper was wet of fluid i can not get it of i have just rang up and new pipe is only 431 so i just cut it of put new one on i put new pads they are 17 and the caliper is 54 so u think thats ok then i no its all done hope it be ok then cheers

Offline insanitybeard

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Re: brakes
« Reply #11 on: February 04, 2015, 05:55:25 PM »
Well, that's an obvious fault so take care of the caliper and hopefully that'll be it sorted- just make sure you bleed all the brakes well afterwards because if the reservoir emptied out then you could have air in all the brake lines, and the master cylinder.
« Last Edit: February 04, 2015, 06:25:57 PM by insanitybeard »
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Offline martcool

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Re: brakes
« Reply #12 on: February 04, 2015, 06:26:43 PM »
Ok thanks for all your help I get the  bits tomorrow and see how it goes the bleeding will be a pain there must be a lot of air in there my miss has only just said to me that the handbrake has not bin good for the last too weaks she has for got to take it off when goung and she not seen it on and car was driving ok so may be thats when it started to play up cheers

Offline martcool

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Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #13 on: February 04, 2015, 06:46:02 PM »
Hi I for got to ask when I bleed the car am I better of haveing it started or off thanks

Offline insanitybeard

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Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #14 on: February 04, 2015, 07:02:35 PM »
There's no benefit for the engine to be running when bleeding the brakes, off will be fine.
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Offline martcool

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Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #15 on: February 07, 2015, 08:48:57 AM »
Hi there I think I have done my brakes but when I took of my front wheel ns I see both cv boots have gone in and outer more work I got them going to do today I have looked at a video that shows to take of the drive shaft and take of the inner joint but do u think its better to take of the outer one and just do them both that way cheers for help

Offline Chrispb

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Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #16 on: February 07, 2015, 10:47:24 AM »
Be warned, if the boots have been split for some time water and dirt will have got into the joint causing wear and damage so could be false economy just fitting new boots, also what is the condition of the inner joint as these are prone to seizing and/or breaking up.
Most members change the complete shaft as it is much quicker and cleaner and you will have a guarantee.
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Offline martcool

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Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #17 on: February 07, 2015, 02:34:31 PM »
Hi there I have had a look they sill got grease in them I think I just got them In time I hope I not got it of yet I can not find a star to get the drive shaft off to have good look when I get it off am I better of taking the out side one off to do them both thanks

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Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #18 on: February 07, 2015, 02:57:08 PM »
hi there i payed 20 for the 2 cvs i have just found on ebay complete shaft all done for only 27.99 is that right with a 2 years on it will that be a lot better to do thanks

Offline Chrispb

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Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #19 on: February 07, 2015, 03:21:39 PM »
Be wary of stuff like that on ebay,I just paid £90 for a complete shaft with 1 year guarantee.
2009 Kia Sedona GS In Black 2.9CRDI 183PS. 5 Speed Manual WAV.
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Offline martcool

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Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #20 on: February 07, 2015, 03:27:50 PM »
so yes that cheep but th#ey have sold 361 of them and everone say they are good what u think put new cvs on or take a chance and get that new one  i just had a look at my one were the drive shaft goes in were the 3 big balls are u can move that upand down not a lot but u can is that ok cheers

Offline sasquartch

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Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #21 on: February 07, 2015, 04:38:30 PM »
I bought a cheap driveshaft from Eurocarparts and it lasted less than a year before a boot split then after 18 months the outer CV joint failed.

I would strongly advise against cheap driveshafts off ebay unless you just want to fix the car and sell on - yes, the cheap ones are fine after fitting, just they wont last long.

GKN-Lobro parts recommended.

In life you get what you pay for. Buy cheap, buy twice (or more)

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Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #22 on: February 07, 2015, 04:42:26 PM »
As above, the cheap ones are shit.

361 positive feedbacks will all have been received within the first 3 months of owning them as you can't give feedback after - of those 361 I bet most have failed by now!
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Offline martcool

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Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #23 on: February 07, 2015, 05:58:25 PM »
HI THANKS for that but to late lol what made  me get one was when i take back the cv joints i got they said they can get new ones for me and they were from same people lot more money i said are they any good they said yes use them all the time and they come with a 2 years warranty on all parts they said the cvs they sold me only come with a year so for 27 for the shaft all done if i got to put a new one on in 2 years its sill only 1350 a year lol how can u go wrong so i got lol thanks for all your helps

Offline martcool

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Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #24 on: February 09, 2015, 06:14:33 PM »
Hi there I got my old drive shaft of to day and the 3 bearings looked ok but looked lije they were a bit rusty 1was hard to move I have my new one coming can u tell me the 6 12mm xzn blots I took out were very tight hard to get out with a long bar do I have to put them back in with lock tight cheers

Offline insanitybeard

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Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #25 on: February 09, 2015, 10:59:50 PM »
I don't think you need to threadlock the screws that hold the inner CV joint casing to the gearbox or intermediate driveshaft flange but it won't hurt. If you mean the tripod rollers in the inner CV joint were actually rusty then that's confirmation that water has entered the joint and the grease has either been contaminated or escaped, something that shouldn't be able to happen if the CV boot is in good order and properly secured.
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Offline martcool

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Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #26 on: February 10, 2015, 06:32:31 PM »
Hi thanks all back together and I have to say tge drive shaft looked fantastic quality hoing back to the brakes I done new caliper but now the brake is at the top they are working but not 100% if I hold my foot down hard it will cheap to the floor but take of it come back up what u think mate cheers for help

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Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #27 on: February 10, 2015, 06:37:33 PM »
If its creeping to the floor then you either have fluid leaking or more likely the seals in the master cylinder are failing :(
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Offline martcool

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Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #28 on: February 10, 2015, 06:48:56 PM »
Ok do u think its were I have not bleed it a though and there's air sill in pipes will u see it coming out of the master cylinder cheers

Offline insanitybeard

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Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #29 on: February 10, 2015, 06:51:33 PM »
This is a question I meant to start as a new topic but seems appropriate here, but before that- it sounds like the fluid in the vehicle in question here may have dropped low enough before the original fault was picked up to allow air into the master cylinder, so my first question to the O.P- did you thoroughly bleed all four calipers?

And the question I was going to raise- does VCDS allow you to perform the ABS modulator purge to remove any air trapped in the valve body? It was something that you could perform with Ford's old WDS and newer IDS and was used to purge air from the modulator for example if a new unit was fitted, so I'd expect VCDS to have it but I've no experience of VCDS. It looks like it may be worth carrying out the purge in these kind of circumstances!
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Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #30 on: February 10, 2015, 06:59:22 PM »
Hi now I am lost lol I did lose all the fluid I put more in and it was going to tge floor I see that the back caliperr was gone so now I done that I did bleed it but did not no how much I just done 10 pumps on all of them the brake is a lot better its right up now and works if u pump it its as hard as rock but if u just hold it down hard it will go down in time cheers

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Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #31 on: February 10, 2015, 07:05:47 PM »
Hi my friend has got a air pump that he put on the brakes do u think this will be better to bleed them cheers

Offline insanitybeard

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Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #32 on: February 10, 2015, 07:07:19 PM »
If air got into the system then there could still be some trapped in the ABS modulator- it needs somebody with VCDS to confirm if you can do a modulator purge, if you don't own VCDS you could try taking your car onto a straight and clear bit of road (you don't want to get rear ended!) and from a reasonable speed stamp on the brake pedal to get the ABS to kick in, if you do this a few times it may purge any trapped air.

Not saying it's definitely the cause of your still soft brakes but worth a look..... It may also be worth bleeding the brakes again, if the system has been dry it can take a while to get all the air out of it.
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Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #33 on: February 10, 2015, 07:17:01 PM »
As above, although I'd find a field or dirt road so you're not shredding your tyres :)
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Offline martcool

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Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #34 on: February 10, 2015, 07:19:03 PM »
Ok I think I go use my friends one see if this one will push the air out cheers

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Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #35 on: February 10, 2015, 07:24:26 PM »
Does VCDS allow you to do a modulator purge do you know Mark?
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Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #36 on: February 10, 2015, 07:54:57 PM »
Hi I just rang my m8 he said his got a power bleeder and if there's any air anywhere in the car it will pull it out fast so hopefully it will work cheers so is the vcds the abs I did say to him about the abs he said the power bleeder will do that too I dont no I just hope lol

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Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #37 on: February 10, 2015, 08:09:57 PM »
Just be wary to keep the pressure low! If you do have a seal on the way out a power bleeder will destroy it in a few seconds!
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14 VW Tiguan 2.0 TDI 177 AWD R-Line in Deep Black Pearl
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With retrofitted everything except another slidey door! :)

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Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #38 on: February 10, 2015, 08:34:11 PM »
Ok thanks hope its ok my car bin running for about a weak battery was flat and it was ok on tick over but soon as u wanted to go it wood not it got a bit better pumping the throttle one I got going it was ok but when started of agen it wood not I think its only were the fuel has gone back may be I hope it be ok when get going agen cars are a nightmer

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Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #39 on: February 10, 2015, 08:48:01 PM »
My octavia had brake failure last week due to a rear caliper leaking, I think the braking system is similar to the galaxy. My mechanic went through 2 litres of brake fluid and spent 2 hours bleeding the brakes due to the pedal sinking to the floor, he said that he got a pedal until he started the car. In the end he bleeded it with the engine running. Afterwards I had a long pedal travel which the mechanic put down to the master cylinder running dry and possibly having damaged seals, after  a week the pedal has returned to  normal. Think it was the nsr caliper that turned out to be the culprit in the end, even though it was the osr caliper that went!

Offline martcool

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  • Model: Galaxy Mk2
  • Spec: 02 tdi 115 zetec
Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #40 on: February 10, 2015, 09:05:23 PM »
Ok I dont think it went dry right at the back but I see what u are saying I onky bleed it for 5 mins only done 10 pumps on each so I think it needs more I hope cheers for that mate

Offline Chrispb

  • Mindsaysyesbodysaysnono
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  • Model: Galaxy Mk2 Auto
  • Spec: 52reg TDI 115 Ghia
  • First Name: Chris
  • Region: South East
  • Country: United Kingdom
Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #41 on: February 10, 2015, 09:47:10 PM »
Try pressure bleeding, you will need two people to do this, one to pump the brake pedal and one to bleed each wheel in turn.
Tools required.
A jam jar or milk bottle.
A length of tube that fits tight on the bleed nipple and reaches the bottom of the jar or bottle.
Ring spanner for bleed nipple.

1.Make sure the reservoir is full
2.With engine running pump brake pedal 5 or 6 times, on the last pump keep pressing on pedal hard while second person opens bleed valve and observes the fluid ejected.
3. Do not lift pedal till the bleed nipple is closed then lift pedal slowly, the first few times there will be a lot of aerated fluid but should become clear with no air.
Repeat this on each wheel not forgetting to fill the reservoir.
2009 Kia Sedona GS In Black 2.9CRDI 183PS. 5 Speed Manual WAV.
2003 MK2 Galaxy Ghia In Solid Black 1.9 TDI 115PS. 5 Speed Automatic.

Upgraded Eberspächer booster heater  to independent heating with 7 day timer.

With VCDS lite (full version) need a code clearing or want to scan for faults in the north kent area, PM me.
All for a pint of Strongbow.

The FordMPV.com Forum - The free forum for questions and answers relating to the Ford Galaxy, S-Max and C-Max

Offline martcool

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  • Spec: 02 tdi 115 zetec
Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #42 on: February 10, 2015, 09:59:23 PM »
Hi there I have done this and its got lot better but sill needs more thats y I am going to do with my friends one its a power bleeder u dont have to pump foot brake

Offline raf_75

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Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #43 on: February 10, 2015, 10:00:23 PM »
Forgot to say there were 3 of them at it in the end, one pumping, one bleeding and one filling. He seemed to fill it a lot more often than I expected. Just thank God I agreed the price beforehand lol

Offline stuiescenic

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  • Model: Alhambra Mk2
  • Spec: 54 130TDI Stylance
  • Region: East Anglia
Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #44 on: February 11, 2015, 12:53:20 PM »
Just thought I would add that after I replaced my 2 rear callipers due to the handbrake, I bled the system and the pedal was solid, but when the engine is running it will go to the floor.
My local garage had a look and assures me this is normal on some diesels, due to the vacuum pump running off the engine for the servo being really strong.
Since then it has passed an MOT no problem and drives fine....

Stuart

Offline martcool

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Re: Mk2 Galaxy- Soft brake pedal- going to the floor
« Reply #45 on: February 11, 2015, 05:25:04 PM »
hi thats good to no i have bin bleeding them for the last 2 hours now they are a lot better it stops good now soon as u hit the brake  with engine off the foot pedal is hard as rock when running it is now but it will cheep down some now but not all the way to the floor like it was my friend said it will get better after a weak or 2 so all good at mo and y it was not running right i left the pipe of going to air fiter lol cheers everone who helped me martin

 

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