in-line fuel-injection pump with vacuum governor Possible demonstrations: function of vacuum governor displacement of control rod rotation of the pump plungers stroke of pump plungers function of pressure valves function of supply pump description ordernumber 1008 see also: Audi cylinder head with 5 valves pump tappet of an in-line pump turbo-charger with variable geometry and electrical control motor cylinder head with direct petrol injection (GDI)