1978-79 Models
Injectors must be tested (after removal from engine), using an injector tester. On 924, opening pressure is 36.26-52.21 psi (2.55-3.67 kg/cm2 ). On 928, opening pressure is 43.51-59.47 psi (3.06-4.18 kg/cm2 ). Specifications for 911SC and 930 Turbo not available from manufacturer.