Right here we go cars always ran sweet and never missed a beat so thought I'd treat her to some new plugs before m.o.t same as brought last time ngk's fit all four new plugs put leads back on thinking jobs a good-un started car and it misses like a bitch. So I set about removing first new plug put old one back in still missing so took second new one out and out old back in and bam ran beautiful so thought rite might be a fault with the new plugs so took em all out and out all the old ones back in fired her up and hay presto sweet again until I touch the throttle and it starts to miss again turned it off checked all leads , dizzy etc no issues with those so thought rite try it again fired up running good then it starts missing again I've got no idea what's causing it now and it's fuxking me off to be honest as I never had this issue before Any advice greatly appreciated