well I would check the electricl part of it before looking into the mechanical part of the VTEC system..... unhook the VTEC wire from the solinoid and attach a multimeter or if your being cheap hook up a light and drive at where the VTEC should usually kick in (ie 5500 RPM) and see if it lights up..... next if thats not the problem...... hook up the solinoid to a 12V power source and see if it clicks .... if both check out good it would be mechanical.....YOu may be missing a lost motion assembly on your head