Bleeding Brake Problem
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Re: Bleeding Brake Problem
Don't fill the bloody Gunson thing with brake fluid then lol.
Either I'm doing something wrong or right but my Sealey unit has been doing a fine job since 2016 and the lack of dents in my front bumper will attest to that.
Either I'm doing something wrong or right but my Sealey unit has been doing a fine job since 2016 and the lack of dents in my front bumper will attest to that.
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Re: Bleeding Brake Problem
This what I bought
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£20
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£20
Hayward's Street/bridgeported rebuild,595's,Tein coilovers edfc Racingbeat rear anti roll bar oil pres oil temp gauge pod's,lockwood front rear grills,Tinted wind ws folding tow hook's,595s,connect2 ,at long last sohn and ap50 tank instaled ,revi ram air duct already fitted ! calipers painted,diff oil changed .
just oil lines to fit at some stage ( had them a while too)
180 of 400
just oil lines to fit at some stage ( had them a while too)
180 of 400
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Re: Bleeding Brake Problem
Exactly what I've got with a different logo.
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Re: Bleeding Brake Problem
Tried both tops using fluid in bottle and 20psi blew straight out from reservoir cap13Black wrote:Exactly what I've got with a different logo.
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Hayward's Street/bridgeported rebuild,595's,Tein coilovers edfc Racingbeat rear anti roll bar oil pres oil temp gauge pod's,lockwood front rear grills,Tinted wind ws folding tow hook's,595s,connect2 ,at long last sohn and ap50 tank instaled ,revi ram air duct already fitted ! calipers painted,diff oil changed .
just oil lines to fit at some stage ( had them a while too)
180 of 400
just oil lines to fit at some stage ( had them a while too)
180 of 400
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Re: Bleeding Brake Problem
*cough*
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- 13Black (Sat Jul 14, 2018 10:38 pm) • nightfire10 (Sat Jul 14, 2018 10:41 pm)
Huw
2004 Velocity Red 231 - SatNav, parking sensors, sunroof, red/black interior, K&N Typhoon, Toyo backbox, f- -ked engine - bought Jun 2016 sold Oct 2016
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Re: Bleeding Brake Problem
The caps provided are the wrong screw type, needs a modified OEM bayonet cap.
I think you'll find mister Spudato that the front bumper is fantastically untouched and my engine still in my engine bay
I think you'll find mister Spudato that the front bumper is fantastically untouched and my engine still in my engine bay
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Re: Bleeding Brake Problem
Hence me after a spare cap13Black wrote:The caps provided are the wrong screw type, needs a modified OEM bayonet cap.
I think you'll find mister Spudato that the front bumper is fantastically untouched and my engine still in my engine bay
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Hayward's Street/bridgeported rebuild,595's,Tein coilovers edfc Racingbeat rear anti roll bar oil pres oil temp gauge pod's,lockwood front rear grills,Tinted wind ws folding tow hook's,595s,connect2 ,at long last sohn and ap50 tank instaled ,revi ram air duct already fitted ! calipers painted,diff oil changed .
just oil lines to fit at some stage ( had them a while too)
180 of 400
just oil lines to fit at some stage ( had them a while too)
180 of 400
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Re: Bleeding Brake Problem
The clue to the problem is "bayonet" , as such a fitting has to go in further to turn and then back off to lock.
In theory you could use a foam seal with sufficient depth to compress and still expand to fill the gap.
I tried with everything I had to hand and failed.
Either to much to allow the bayonet to lock and/or not enough to get anything close to an airtight seal.
Any gap and it's not just air pressure you're loosing, fluid sprays everywhere
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In theory you could use a foam seal with sufficient depth to compress and still expand to fill the gap.
I tried with everything I had to hand and failed.
Either to much to allow the bayonet to lock and/or not enough to get anything close to an airtight seal.
Any gap and it's not just air pressure you're loosing, fluid sprays everywhere
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Re: Bleeding Brake Problem
What are people -not reading- about this.
I have been successfully using one for well over a year now. No fluid sprayed anywhere. No air in mine or customers brake or clutch lines.
I have been successfully using one for well over a year now. No fluid sprayed anywhere. No air in mine or customers brake or clutch lines.
Last edited by 13Black on Sun Jul 15, 2018 7:04 pm, edited 1 time in total.
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Re: Bleeding Brake Problem
Yes but you have the melons power beaming from your hands
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Re: Bleeding Brake Problem
Mazda installed a brilliant device to create fluid pressure without any cap sealing issue. It's called a brake pedal. People like Nick need to be able to bleed brakes single handed, so vacuum or pressure bleed systems are useful. But even my 16 year old can follow "down, up, down, up" instructions. It takes a few minutes. It's quicker than getting my Easibleed out of its box. I just don't get the problem.
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Re: Bleeding Brake Problem
I was actually showed a different way to what i would usually do. Pump the brakes then hold down and open and close the bleed screw quick, rinse and repeat a few times then onto the next wheel. The built up pressure spits out any air, nice 'n' quick! This is of course if you have someone to pump the pedal.
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Re: Bleeding Brake Problem
Anyone seen a donkey that lost a hind leg?
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Re: Bleeding Brake Problem
Replaced the master cylinder, bled the system again and nothing. The pedal still goes to the floor.
Any other ideas?
Any other ideas?
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Re: Bleeding Brake Problem
You've either got a massive leak or a massive air lock. A leak should be really easy to find. Any air lock should be easy enough to push through. I think you need another person to give a second opinion on this, because it's possible you are missing something obvious. (Not a criticism. We all do sometimes....).
Random unlikely possibilities are that one of your brake hoses has failed (and is balooning when you press the pedal). Or you have some strange failure of the ABS pump that is bleeding all your pressure (this would be very odd because they are "fail safe" devices).
Random unlikely possibilities are that one of your brake hoses has failed (and is balooning when you press the pedal). Or you have some strange failure of the ABS pump that is bleeding all your pressure (this would be very odd because they are "fail safe" devices).
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Re: Bleeding Brake Problem
I guess the pedal is actually pushing the master cylinder? You haven't broken the push rod in some odd way?
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Re: Bleeding Brake Problem
A little trick i learnt from my motorbike days when fitting braided hoses...after fitting and bleeding sometime never got a "nice lever" which on a bike with braided hoses is about 4mm play to very firm.
Trick passed onto me was cable tie the lever to the grip and leave over night...
So cars ive used broom / breaker bar to push pedal hard propped with seat and left overnight...and i dont know why this has always resulted in a lovelly firm pedal....
Note i do this without servo action car not running...worth a try...?
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Trick passed onto me was cable tie the lever to the grip and leave over night...
So cars ive used broom / breaker bar to push pedal hard propped with seat and left overnight...and i dont know why this has always resulted in a lovelly firm pedal....
Note i do this without servo action car not running...worth a try...?
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Re: Bleeding Brake Problem
I've done similar using bricks. I always leave the resevoir cap off - while I can't recall, I assume I was told to do it that way.
I was told that constant application of pressure slowly pushes any air to the highest point in the system (the brake fluid resevoir). Whether that's twaddle or not, I couldn't say.
But it helped no end on an old Capri where I upgraded to vented front disks & braided lines. I couldn't get a good feel no matter how much I bled them. Then after 24 hours with the brakes on, a quick bleed at each nipple and they were great.
I was told that constant application of pressure slowly pushes any air to the highest point in the system (the brake fluid resevoir). Whether that's twaddle or not, I couldn't say.
But it helped no end on an old Capri where I upgraded to vented front disks & braided lines. I couldn't get a good feel no matter how much I bled them. Then after 24 hours with the brakes on, a quick bleed at each nipple and they were great.
Huw
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2006 Black PZ - Rotary Revs full Bridgeport Gold rebuild - Toyosport decat - SAI delete - 585R coils - K&N air filter - purchased Oct 2016 - Engine rebuild Dec 2017
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Re: Bleeding Brake Problem
Not that i could see, it all went together ok. The pedal did firm up a little when i bled the master cylinder after fitting but it just went straight to the floor again after a couple pumps. I also had a good look round for any leaks and i couldn't see anything. It will be something silly and i'll feel like a twit afterwards
The fact that it's firming up at all and no leaks present would mean that the new brake lines are fitted ok right?
No leaks at the calipers, lines or anywhere underneath that i could see. Also followed the lines in the engine bay and everything looks dry. So now i'm thinking it's either one hell of an airlock or something else is kaput.
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Re: Bleeding Brake Problem
I'll give the overnight idea a go, it's gotta be worth a try. It requires little effort after all and i'm all for that
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Re: Bleeding Brake Problem
Yep try it, note brake fluid level in reservoir too...if it drops then you know air was in system...cap on off upto you caps have a bleed on them.
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Mondeodog towcar.
Mx5 mk2 1.8 10ae nice day daily rust bucket.
92 Rx7 fd3s stock twins..est.320bhp. RETIRED Track car.
93 eunos s-sp 1.6 turbo gt2545r 226bhp track slag. in continuous development.
Scooby doo bugeye wagon wrx daily.
Mondeodog towcar.
Mx5 mk2 1.8 10ae nice day daily rust bucket.
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Re: Bleeding Brake Problem
You may hate me for this but you are doing the following the process that Seriousam posted of;
Starting at the further most point in the system
You say.......Down
Assistant.....Confirms Down
You............Open nipple and close again
You say........Up
Assistant......Confirms Up
You say........Down
And repeat
No pumping or releasing of the pedal at all unless the nipple is tightened.
Starting at the further most point in the system
You say.......Down
Assistant.....Confirms Down
You............Open nipple and close again
You say........Up
Assistant......Confirms Up
You say........Down
And repeat
No pumping or releasing of the pedal at all unless the nipple is tightened.
Rotary History;
Sep 2005-Aug 2006 EO55 XOL VR 231 New
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Jan 2019-Jun 2020 T200 CAD Orange SC 231
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Jan 2019-Jun 2020 T200 CAD Orange SC 231
Feb 2020-May 2023 RR54 AJR VR 231 Modified for Track
Oct 2020-Mar 2021 YA56 EUE Copper Red Nemesis
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Re: Bleeding Brake Problem
Ashman, are you around tomorrow afternoon? I could come and mutter confused noises at your brakes if you like?
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- 13Black (Thu Jul 19, 2018 6:14 pm) • ChrisHolmes (Thu Jul 19, 2018 10:16 pm)
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Re: Bleeding Brake Problem
Huw and Boosted. The reservoir is isolated from the hydraulic lines when the pedal is pressed, so I'm not sure that anything can get back to the reservoir when the pedal is pressed. But..... I wonder if that method helps in the short term because it forces the air to go into suspension in the brake fluid (essentially, doing a "soda stream" on it). Perhaps, when the pedal pressure is released, the air then gets released from suspension as bubbles (like taking the "cap off the bottle") and those bubbles can rise to the highest point, which could be the reservoir.
I was sceptical when I read your posts but, on thinking about it, there could be some science in there.
I was sceptical when I read your posts but, on thinking about it, there could be some science in there.
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Re: Bleeding Brake Problem
I haven't actually tried it yet, had some more pressing concerns with one of my cats
I'll be available all weekend mate, well pretty much anytime really. I do need to get the cat down the vets once she comes in though so i may zip out at a moments notice. If i'm not home then i'll not be far. Ideally i need to get it back up on stands so i can get on with it. You still have my address?