Hi Mark thanks for your reply I agree the problem is that everthing is new the SU fuel pump was new sa is the coil etc the car has only done around 1800 miles.

I got home the other day and it would tick over ok but if you floored the accelerator it would die and not restart untill it had cooled down a bit if you were gentle with the pedal it was ok so I enriched the mixture untill it would not cut out this would seem to be a cure untill I noticed the fuel guage go down at an alarming rate!!!!!!!!!!

So made it weaker and it seemed to work for a bit but as soon as the car got to working temp it started to splutter again so I think it is the dredded bimetal jet mount.

So anyone got a set of HS4's I can try??