MINI Cooper Forum banner

crack valve

  1. Maintenance & MINI Care
    Hello all, I am new to this forum and I need some help. My friend has a broken Mini 2009 R56 N12 engine. The engine is dead because there was a coolant leak and he continued to ran it for quite awhile. We did a compression test. Cylinder 1, 4 had no compression. Cylinder 2, 3 were fine. I...