Mk3 golf gti 8v?

I have golf gti 8v about month a go it cutout
and wount start from that time, there was a bad earth to the engine what burnt out the coil earth lead l have done that now I have put a new coil in still the same try a new ecu relay no change. But thing I have notice is that there is one spark coming from the Coil lead and then it stop. So can any one help me it's doing my head in