1985td - when it is cold 40'sF and below, car wont start unless i push the accelerator pedal to give it some fuel, but when i do it starts right up, however i need to keep giving it some fuel via the pedal or it will cut off. after a minute its fine. when the weather is warm its ok. had one plug test bad and replaced it - no change in behavior. replaced injector nozzles - problem persists. car runs like a dream in all other respects. could GP's that test ok need replacing anyway ?