7. A CONDENSATE SCAVENGING ARRANGEMENT FOR A DIESEL ENGINE HAVING A PRESSURIZED FUEL SYSTEM AND A COMBUSTION CHAMBER COMPRISING VALVE MEANS INTERPOSED IN A PASSAGE CONNECTING THE COMBUSTION CHAMBER TO THE ATMOSPHERE, A PISTON ASSEMBLY OPERATIVELY CONNECTED TO SAID VALVE MEANS, A FLEXIBLE DIAPHRAGM IN COMBINATION WITH THE FUEL SYSTEM AND BEING EXPANDABLE AGAINST SAID PISTON ASSEMBLY BY THE FUEL PRESSURE OF THE FUEL SYSTEM, SPRING MEANS BIASING SAID PISTON ASSEMBLY AGAINST THE DIAPHRAGM AND BIASING SAID VALVE MEANS IN AN OPEN POSITION, SAID DIAPHRAGM AND SAID PISTON OPERATING SAID VALVE MEANS AGAINST SAID SPRING MEANS TO GRADUALLY CLOSE SAID PASSAGE IN RESPONSE TO PRESSURE BUILD-UP IN THE FUEL SYSTEM AS THE ENGINE IS STARTED.