2006 Opel Corsa Knocking sound when braking hard

2006 OPEL CORSA
52,000 MILES • 4 CYL • FWD • MANUAL
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CARINA
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Hi, I just had new disc pads fitted in the front and they skimmed the discs. Now there is a knocking sound when I brake hard and sudden. It never did it before. Would you maybe know what could've caused this?

P.S. I am in South Africa
Mar 4, 2009 at 11:05 AM
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DAVE H
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have them check one of the caliper pistons is not stuck/sticking !!


https://www.2carpros.com/forum/automotive_pictures/266999_AAA2_82.png

Mar 8, 2009 at 2:05 PM