Monitoring equipment comprising a part (36) which defines a cavity (42), and input means (12, 20) to input fluid under pressure into the cavity (42). Mounting means (44) are provided on the said part to enable an engine fuel injector valve (46) or other fl...

Monitoring equipment for monitoring the performance of an engine fuel injector valve (46). A source (10,12) of pressurised fluid and an injector valve head (36) are provided with connection means (44) to enable an injector valve (46) to be connected theret...