Bled Brakes -- still no pressure

**icefish1** · 09-21-2009, 09:57 PM

So I bled my brakes successfully, thanks to the advice received on this forum.

But still I have no pressure? If I pump the front brake w/ the bleeder nipple open fluid squirts out.

I have bled it multiple times, while closing the nipple and pumping several times and repeating.

Am I missing something?

Thanks again

**cagie** · 09-21-2009, 10:14 PM

make sure you have plenty of fluid in the reservour, and keep bleeding until you build pressure. If you are not building pressure suspect either still air in the line or master cylinder is bad.

**flitecontrol** · 09-21-2009, 11:35 PM

Sometimes the line will develop a weak spot, sort of like an anurism (sp) in a blood vessel, that willl bulge and allow the fluid to expand in it rather than pushing the brake piston.

**Guba** · 09-22-2009, 01:02 AM

After you sqeeze the brake to bleed them, do you close the bleed off before releasing the brake? If you don't, and release the brake with the bleed still open you can let air in again.

**icefish1** · 09-23-2009, 06:54 PM

The master cylinder states I can use DOT 3 or DOT 4 fluid. I used dot 3. Could this be part of the problem?

**flitecontrol** · 09-23-2009, 07:26 PM

Quote:

Originally Posted by icefish1

The master cylinder states I can use DOT 3 or DOT 4 fluid. I used dot 3. Could this be part of the problem?

No. Are they still not firm? I'd go back and rebleed them following the instructions to the T. If they are still spongy, you can try this. Pull the brake lever by hand as far back as it will go, then tie it off in that position and leave it overnight. Helps to have an assitant. If the brakes are still weak in the morning, you need to look at rebuilding the master cylinder. Really not that hard to do, but you'll need to bleed them all over again.