the fuel reg is brand new,which should be pre set to 3.bar with vac pipe on but it was only 2.5 bar so i adjusted it to 3 on idle and 3.5 with pipe of.but im thinking theres a problem with loom as fuel pump supply i rewired a few months back should be given a good voltage .think theres a lot of resistance in loom which is giving a false reading so this afternoon im goona try a spare loom my m8 has.last night tried every avenue .i.e bent valve,cam stuck open ,snapped cam.also gonna try fuel delivery later as well see if there not enough fuel and thats why i up the reg to compensate the lack of volts to pump