Mazda lantis V6 problem

Hi there,

I have a 1993 mazda lantis with a KF-ZE and it wont start. It has spark and fuel pressure as far as the fuel rails so it looks like it's injector related. When it broke i was parking and i changed from drive to reverse to straighten up and it died as soon as it went into reverse. One thing i noticed and fixed was a broken earth that bolts onto the starboard engine mount. Still no luck after this. Does anyone have any experience and know what the problem may be? I am reasonably mechanically minded but have got way over my head. any help would be greatly appreciated.

thanks