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Posted

Hello All

I recently changed the front pads on my C5 2.0HDi - the result is that I have to pump the pedal- even after letting the new pads bed in for 300 miles now.I didn't undo the caliper bleed nipples before winding the pistons back - was that a mistake?

I am going to bleed the brakes to see if that sorts it , although I'm not sure what I could have done to affect the hydraulic circuit- but worth a go!

Before I set to it , does anyone know if silicone fluid is OK for these cars. I've used it in my ZX and old Renaults to good effect but I've heard not every car likes the stuff.

Cheers

Posted

DOT 4 is the fluid that's recommended. Silicone may damage the seals, causing them to swell. Also silicone and DOT 4 don't mix.

 

I've heard that it's advisable to open the bleed nipples before winding back. It also stops dirt being pushed into the ABS.

  • 2 months later...
Posted
DOT 4 is the fluid that's recommended. Silicone may damage the seals, causing them to swell. Also silicone and DOT 4 don't mix.

 

I've heard that it's advisable to open the bleed nipples before winding back. It also stops dirt being pushed into the ABS.

you dont need to undo bleed nipples just take top off brake filler and wind back

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