Soft brake pedal, do they have rubber hoses?
Discussion
No my brakes have been causing me problems for what seems like ages now.
I have bled re bled and changed the Brake master cylinder, yet they still are soft when the engine is running and take a few pumps to get much pressure up.
Now is there a specific order other than front to rear for bleeding the pipes?
Or could it be that a hose is bulging under pressure when pressing the brakes, and thats why it doesnt feel the same when pressure bleeding? But I did think the Tuscan had braided steel lines all around, abiet wrapped in plastic. Is it still possible they can bulge?
Just had a thought, would changing the rear pads have an effect?, They have about 4mm of pad left, s wondering if these are too low, maybe causing a spongy pedal feel???
Or another thing, should I bleed both the front nipples on the caliper at the same time, rather than one then the other.?
I have bled re bled and changed the Brake master cylinder, yet they still are soft when the engine is running and take a few pumps to get much pressure up.
Now is there a specific order other than front to rear for bleeding the pipes?
Or could it be that a hose is bulging under pressure when pressing the brakes, and thats why it doesnt feel the same when pressure bleeding? But I did think the Tuscan had braided steel lines all around, abiet wrapped in plastic. Is it still possible they can bulge?
Just had a thought, would changing the rear pads have an effect?, They have about 4mm of pad left, s wondering if these are too low, maybe causing a spongy pedal feel???
Or another thing, should I bleed both the front nipples on the caliper at the same time, rather than one then the other.?
Edited by tuscan_al on Wednesday 23 April 07:30
Edited by tuscan_al on Wednesday 23 April 07:34
Sounds very frustrating!
I have always bled the back brakes first, this should minimise contamination of the fluid. Aim to do the wheel furthest from the master first, then in reverse order to the nearest.
Any rubber hoses will certainly have steel inside them, they will bulge slightly but no enough that it would make your pedal feel spongy.
How much fluid have you been pumping through the system? IT might take as many as ten reservoir-fulls of fluid sometimes, especially since you've had the master cylinder off and will definitely have introduced lots of air.
You should definitely only bleed one nipple at a time.
What set up are you using? Is it a pump/shut with two people or are you using one of the pressurised systems? Have you put a clear tube over the nipple and into some clean fluid so you can't suck air back up?
Cheers,
FT.
I have always bled the back brakes first, this should minimise contamination of the fluid. Aim to do the wheel furthest from the master first, then in reverse order to the nearest.
Any rubber hoses will certainly have steel inside them, they will bulge slightly but no enough that it would make your pedal feel spongy.
How much fluid have you been pumping through the system? IT might take as many as ten reservoir-fulls of fluid sometimes, especially since you've had the master cylinder off and will definitely have introduced lots of air.
You should definitely only bleed one nipple at a time.
What set up are you using? Is it a pump/shut with two people or are you using one of the pressurised systems? Have you put a clear tube over the nipple and into some clean fluid so you can't suck air back up?
Cheers,
FT.
Im using aezibleed, pressure one off a tyre. then on the nipple end the ezi bleed one way valve. have put a good 1ltr of fluid through. Its driving me mad!!
Changing the master cylinder was a pig of a job getting the pedal box and pipe work out too.
All very fustraing and not used the car much now!
I know I have bled it ok as the clutch now works fine, and the master cylinder on that was changed too, so got the air outta that.
??
Changing the master cylinder was a pig of a job getting the pedal box and pipe work out too.
All very fustraing and not used the car much now!
I know I have bled it ok as the clutch now works fine, and the master cylinder on that was changed too, so got the air outta that.
??
I think from memory it stays where it is, not sinking away, but when driving if you go to stop, instead of the pedal being hard and good feel like before, it goes pretty much to the floor with a whoosh sund from the vacuum servo, and takes maybe three pupms to get a good pressure.?
hard to describe other than a soft pedal unless pumped, but if you apply pressure it does not sink away, and the master cylinder is new now anyway.
hard to describe other than a soft pedal unless pumped, but if you apply pressure it does not sink away, and the master cylinder is new now anyway.
Message Board | Tuscan | Top of Page | What's New | My Stuff