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Message: <blockquote data-quote="Richard L" data-source="post: 537853" data-attributes="member: 52972">Phillip,If you pushed the pistons back and fluid shot out the piston, you may have clogged up brake line and now you have a leaking caliper.  It's possible that your piston bore was corroded and pitted, and when you pushed the piston back you damaged the piston and/or seals.That caliper needs to be rebuilt or replaced (if not rebuildable).  I would recommend trading in both calipers for rebuilt units, because if one is damaged due to corrosion, the other one is probably not too far behind.  Since most rebuilt calipers are fairly inexpensive,  I will usually replace the old calipers with units every time I change front brake pads and avoid all potential problems.I have been doing brake jobs for many years and I always recommend opening the bleed screw before pusing the pistons back.  This servers a number of purposes:  1.  It removes much of the contaminated fluid and does not force it back into the ABS unit or the Master cylinder.2.  If you capture the old fluid in a jar, you will get a good look at the condition of the fluid and any contaminates.3.  It makes the pistons easier to push back with just your fingers.  By using your fingers to push the pistons back, you can feel any binding or or grating that would indicate a rusted, pitted, or otherwise damaged caliper bore.  If you use a C-clamp, you have no way of knowing if your caliper is bad and you may be wasting your time and money doing a brake job that will soon fail....Rich</blockquote>

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