Civic rear brakes

2002 Civic 1.6 SE sport, 126K mileage
Failed its MOT on rear brake discs worn and imbalance on parking
brake.
Fitted new discs and pads
Cleaned and checked for free movement of piston and caliper
Adjusted hand brake and checked operation, all seems OK.
Still failed on rear brake imbalance, pedal is not soft so don't
suspect air in hydraulics.
Anyone any suggestions where to look next?

Bob

 

How did you check for free movement?

Has anybody peeled the dust boot back to check for a line of rust on the
piston?

 

We didn't peel the rubber back but gently pressed the brake pedal
(engine off) and watched the piston move out smoothly then turned it
back in, which I will admit was a bit stiff but went back in fully.
The caliper bolt pistons (or whatever they are called) were both free
with no sticking. However my son was desperate to get car done and
paid the mot centre £70 to sort it, so he now has his mot. I'll try to
find out more when I get to see the report.

Thanks

Bob

 

Then it's sticky. You've got rust on the piston. Time for a rebuild, or
replacement with remanufactured calipers.

They're sticky, trust me.

Maybe they just put some silcone grease on the pistons and worked them in-
and-out a bit. That can temporarily reduce the stickiness.