DaveBeck

iTrader: (12)

Well put some more calipers on today, after they were bled started the engine and lost pressure.
if i pump them the pressure returns but when i rev the car they lose pressure(until i pump again)
Changed back to old brakes incase new calipers were **** but it kept doing it. exactly the same.

suspected the master cylinder because believed bled them enough.

Anyone had experiance of this? mucho appreciate any help

RON

Dave, i would never try to teach someone to suck eggs, but, you did put the bleed nipple on the new callipers on the TOP didn;t you........

DaveBeck

iTrader: (12)

got 2 bleed nipples on the new calipers mate. dont get what you mean

RON

Air rises.... need i say more!!

DaveBeck

iTrader: (12)

no, but i have 2 nipples same height on either side. do both have to be open?

DaveBeck

iTrader: (12)

i mean one nipple on each side of the caliper

RON

Yes, you will need to bleed both.....

DaveBeck

iTrader: (12)

I mean at same time

DaveBeck

iTrader: (12)

going to a garage to use the pressure method. that way i will know for sure

RON

they shouldn;t need to be both open at the same time, you should be ok doing one at a time....

What method have you been using then..??

DaveBeck

iTrader: (12)

pumping and locking off. not using the pressurizing kit. think maybe the trouble then

Turbotits

iTrader: (2)

You still havent answered the question. Is the nipple on the top or bottom of the caliper?

RON

I normally get someone to pump the pedal for me, and when i see no more bubblkes in the jar of fluid that the hose is in, then i say..... hold it down..... and then lock it off, get them to relax for a few seconds, then try the pedal, in 25yrs of bleeding quite a lot of brakes, i've seldomn had any problems!


Where-as... gearbox's... don;t even ask...LOL!!!

DaveBeck

iTrader: (12)

yeah i have, see post 5. nipples are same height on each side of the caliper.

thats how i did it Ron. going to get it done using the pressurizing method. just to double check. will be cheaper than a new MS.

read about the clutch mate, sucks

Turbotits

iTrader: (2)

yes same height, so are the both at the bottom? or the top? It important cos if there at the bottom they wont bleed properly

DaveBeck

iTrader: (12)

get you now mate. both in the centre(inbetween top and bottom piston)

RON

Is this Ians kit Dave... cos that sounds odd...... the bleed nipples MUST be at the top for the air to escape......

Turbotits

iTrader: (2)

ok cant be that then. lol. The ones that have the nipples top or bottom can be put on the wrong side so nipple is at the bottom which is wrong and they wont bleed properly. What calipers you using where they are in the middle?

DaveBeck

iTrader: (12)

yup, his 4 pot calipers.

DaveBeck

iTrader: (12)

correction, one middle one bottom

RON

In that case, i suspect they're on the wrong side of the car.....

DaveBeck

iTrader: (12)

that could be a possibility mate

Turbotits

iTrader: (2)

i concur swap them from side to side so one nipple is middle and one is top. This then puts the nipple at the top of both pistons rather than as you have then now the bottom of both pistons

DaveBeck

iTrader: (12)

getting looked into tomoz. thanks for advice lads