My truck is a 93 f250 regular cab with a 7.3 idi non turbo and an automatic 4 wheel drive. It as 230,000 on it. No one has messed with the injector pump since I have had it and 1 year ago I never had a problem with the motor. and the idle only is a little rough when I first start it up and I would give it a bit more throttle and it would go away and then it would be fine, and won't do it for another 5 or ten minutes and then would do it again but when I give it more throttle would stop and idle normal, but now it won't start at all, do you think the idle and the starting are related?