Hey all,
I've got a bit of spongy brake pedal at the moment and have put it down to a bit of air in the syste. (give it a quick pump while driving and it firms up considerably).
So, a bleed is due. I know the process from RAVE, but don't have a nanocom so I'll be doing it with my one man bleeding kit and a helper on the pedal.
My thoughts at this stage are to buy a couple of litres of DOT4 (any suggested brands?) and do a complete flush of the system.
Any tips on what to look out for in order to make the process as easy and thorough as possible would be greatly appreciated.
Cheers,
Chris
Swaggie
Chris, has it always been like this? I say that because the early D2 up until 2002 had a pretty poor pedal feel, second pump was always better. It can be improved slightly with a bleed, and make sure you have good pads too, low brake pads make a difference too to overall pedal feel.
No need for power bleed IME if you are flushing.
Again, don't expect miracles with early D2 and to the same extent D1 with ABS as they both have pretty average feeling pedals.
JC
Thanks Justin.
Yep, it's been like this since I picked it up late last year. I'm pretty sure there's air in the system as when I give the pedal a quick pump, it goes firm straight away.
It's got brand new pads and rotors on all four corners.
Swaggie
...Sounds like normal early D2 to me, but as I said try bleeding it out, it will improve the pedal sometimes, but they all suffer from poor first application feel IME.Originally Posted by Sully
JC
Mines same, stop trying to find something wrong Sully, drive it!!
Lol
RoverLord
sounds right to me too.
a bleed might help a little but I always found that a good skim on the rotors and a pad change did more for the pedal feel than just a bleed ever did.
Dave
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Haha! Thanks lads. I've been driving it, don't worry about that!
That's what prompted the braking question.
So, a quick pump which produces a nice firm pedal is normal eh. Bloody Brits.
I'm going to flush it anyway as it's a little low and hasn't been done since putting the new rotors an pads on it.
Master
spongy
Mines' an 02 td5 disco and pedal had been spongy from new---with the abs upgrade I now have a much tighter and better feel pedal???? figger!!!
Master
Mine is the same improves for a few days with new front pads then goes back to normal. Was thinking of flushing and bleeding but now not so sure.
The issue is due to the seal groove on the caliper.
Caliper design has 'pull back' build into the seals housing so the seal rolls under pressure then rolls back slightly pulling the piston from the disc.
A change to the D2a version sees this reduced and better pedal feel.
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