This videos about three-quarters of the way into a head gasket and cylinder head removal on a 2.3 l Mazda 3 engine. The 2.0 2.3 and 2.5 liter engines for Ford and Mazda from 2004 through up 2011 are all very similar. Make sure you know how to perform the timing sequence on this style of motor before you start to tear it apart. If you have any questions please let me know in the comments