Citroen C3 Diesel Chuffing noise from engine -ticking noise-

Short video to show the sound made by the Citroen C3 1.4Hdi 16v (2002) with a leaking injector seal. The engine top sound shield has been removed (just pulls off) to show the injectors and the slightly discoloured pipe around the 2nd injector (from the left). The 'chuffing' can be heard over the sound of the 'diesel knock'.