A fuel valve for injecting liquid fuel into the combustion chamber of a large slow running two-stroke turbocharged compression-igniting internal combustion engine, said fuel valve comprising: an elongated valve housing with a rear end and a front end, a nozzle comprising an elongated nozzle body extending from a base to a closed tip, a main bore extending from said base to said closed tip and a plurality of nozzle holes connected to said main bore, said nozzle being disposed at said front end of said elongated valve housing with said base connected to said front end, a fuel inlet port in said elongated fuel valve housing for connection to a source of pressurized liquid fuel, an axially displaceable valve needle slidably received in a longitudinal needle bore in said elongated valve housing with a clearance between said valve needle and said needle bore, said valve needle having a closed position and an open position, said valve needle rests on a valve seat in said closed position and said valve needle has lift from said valve seat in said open position and said valve needle being biased towards said closed position, said seat being disposed in said elongated valve housing between a fuel chamber in said valve housing and an outlet port in said front end of said elongated valve housing, said outlet port connecting directly to said main bore in said nozzle, said fuel chamber being connected to said fuel inlet port, said clearance opening at one end of said needle bore to said fuel chamber, a lubricating oil inlet port for connection to a source of pressurized lubricating oil, a lubricating oil supply conduit connecting said lubricating oil inlet port to said clearance at a first position along the length of the needle bore, characterized by an ignition liquid inlet port for connection to a source of pressurized ignition liquid, and an ignition liquid conduit extending from said ignition liquid inlet port to said chamber or to said clearance at a second position along the length of said needle bore that is closer to said fuel chamber than said first position. an elongated valve housing with a rear end and a front end, a nozzle comprising an elongated nozzle body extending from a base to a closed tip, a main bore extending from said base to said closed tip and a plurality of nozzle holes connected to said main bore, said nozzle being disposed at said front end of said elongated valve housing with said base connected to said front end, a fuel inlet port in said elongated fuel valve housing for connection to a source of pressurized liquid fuel, an axially displaceable valve needle slidably received in a longitudinal needle bore in said elongated valve housing with a clearance between said valve needle and said needle bore, said valve needle having a closed position and an open position, said valve needle rests on a valve seat in said closed position and said valve needle has lift from said valve seat in said open position and said valve needle being biased towards said closed position, said seat being disposed in said elongated valve housing between a fuel chamber in said valve housing and an outlet port in said front end of said elongated valve housing, said outlet port connecting directly to said main bore in said nozzle, said fuel chamber being connected to said fuel inlet port, said clearance opening at one end of said needle bore to said fuel chamber, a lubricating oil inlet port for connection to a source of pressurized lubricating oil, a lubricating oil supply conduit connecting said lubricating oil inlet port to said clearance at a first position along the length of the needle bore, characterized by an ignition liquid inlet port for connection to a source of pressurized ignition liquid, and an ignition liquid conduit extending from said ignition liquid inlet port to said chamber or to said clearance at a second position along the length of said needle bore that is closer to said fuel chamber than said first position.