we fitted brand new callipers to my capri which went well, but now, the brake pedal travels straight to the floor and has no pressure there. The brakes have been bled twice but still no pressure on the brake pedal. Any ideas?!
Su
No brakes
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guitarswet
- Posts: 334
- Joined: Mon Jul 28, 2008 8:23 pm
No Brakes
Hopefully you followed the bleeding procedure to the letter. It is important not to allow the fluid to drop below the minimum level on the filler reservoir as you do the bleed or you will have to start all over again.
If your peddle is going to the floor and there is no fluid squirting out of any unions then you have air in the bakes somewhere. You will be amazed at how long it can take to bleed the brakes thoroughly. Could take up to a hundred pumps of the brake peddle!
I suggest you start again - get a couple of litres of dot 4 brake fluid. Start with the passenger side wheel and get someone to pour fluid into the reservoir as you sit pumping the brake peddle (if there is only you then pump six times and then top up the reservoir).
The bleed kit should be fitted carefully and it is only neccessary to undo the bleed nipple by a tiny amount (1/4 turn). Keep going until you have pumped through a pint of clear brake fluid. Then tighten the nipple while someone is still pumping. Finally remove the bleed kit. Repeat on the other side (you can recycle the dumped fluid) and then go back over to the other side and try a few more pumps. This time as the nipple is tightened you should start to feel some pressure on the peddle but remember that the pistons in the new callipers are probably pushed right back. As you keep pumping more fluid will push into the calliper and the pistons will tighten onto the pads. Only then will you feel the brake peddle tighten up hard.
You should also do the back brakes as well. Don't stop until you have golden yellow fluid coming out into the milk bottle! Make sure that all your bleed nipples are tight after the bleed is complete. They should all have rubber covers on them and if not I would get some from the scrap yard.
It is possible to do this on your own but it s a lot easier if there is someone to help you!
If your peddle is going to the floor and there is no fluid squirting out of any unions then you have air in the bakes somewhere. You will be amazed at how long it can take to bleed the brakes thoroughly. Could take up to a hundred pumps of the brake peddle!
I suggest you start again - get a couple of litres of dot 4 brake fluid. Start with the passenger side wheel and get someone to pour fluid into the reservoir as you sit pumping the brake peddle (if there is only you then pump six times and then top up the reservoir).
The bleed kit should be fitted carefully and it is only neccessary to undo the bleed nipple by a tiny amount (1/4 turn). Keep going until you have pumped through a pint of clear brake fluid. Then tighten the nipple while someone is still pumping. Finally remove the bleed kit. Repeat on the other side (you can recycle the dumped fluid) and then go back over to the other side and try a few more pumps. This time as the nipple is tightened you should start to feel some pressure on the peddle but remember that the pistons in the new callipers are probably pushed right back. As you keep pumping more fluid will push into the calliper and the pistons will tighten onto the pads. Only then will you feel the brake peddle tighten up hard.
You should also do the back brakes as well. Don't stop until you have golden yellow fluid coming out into the milk bottle! Make sure that all your bleed nipples are tight after the bleed is complete. They should all have rubber covers on them and if not I would get some from the scrap yard.
It is possible to do this on your own but it s a lot easier if there is someone to help you!