nozzle holder with two-spring injection nozzle and needle-displacement sensor function of the nozzle holder, nozzle, nozzle needle, pressure pin and pressure spring. function of the inlet and outlet ducts. Detection of start of injection by a coil. description ordernumber 1176 see also: pump-lines-nozzle carburetter test four-valve cylinder head, diesel direct injection, lorry cylinder and cylinder head with tappet control