My vn needs help

[statesman350chev]

Hi im hoping someone has some ideas for me. I have a vn series 1 commodore when the car is cold it has been stalling, it gets a crackling sound through the injector line until the motor is warm then runs fine. I have replaced the cas and coolant sensor and am at a complete loss I hope someone can shed some ideas

[skruba]

cleand ur injectors or try replacin cleanin dizzy leads sparkplugs

[statesman350chev]

just wondering when the car stalls the injector rails make a crackling noise when the ignition is on. but when the ignition is off the crackling stops i have put another fuel pump in it but made no difference. when i start the car in the mornings and keep the car up in revs 90 per cent of the times the car is fine until i stop and turn it off thanks rob