Thanks for input Dave,
since last post I have tried fitting old injector which was considered faulty back onto the fuel distributor but not in head, if I connect it to cylinder three with fault it does not squirt, if however I connect it to a known good cylinders harness it does, it seems we have either a faulty Ecu, or injector harness, should get a little more time tommorow to look at wireing and or send ECU for test.
Any thoughts, thanks for reading Phrom fill.