Volvo Injection Engine no compression tip This Really works folks

I went out to my car one day after driving it without any incident the day before, only to find it turning over as if no compression and no ignition at all. I was thinking as many would straight away my head gasket or Valves , even the possibility of piston ring damage . But the cure was so simple and thanks to a Volvo Technician who told me what to do my car was up and running in the time it took me to visit a garage and return home see what happened .