Hey y'all, dealing with starting issues on my truck. its a 1995 Ford F350 4x4 7.3l turbo diesel. Its got 315,000 on her. So here we go, it won't start but it will crank. You spray a shot of ether, it will fire up and run. Had it idling for 30 minutes the other day then shut it off. Went to restart, no start. I took the fuel filter cap off and turned the key on, its cycling fuel. Why will it start with a shot of ether and stay running for a long period of time with no problems but won't start normally? I don't have a scanner and the local shop wants a lot of $$$$ just to look at it. I'm more of a "work on my own #### and learn" kinda Guy any ideas are much appreciated! Btw I've replaced the weak starter with a new one, new fuel filter and anti gel fluid in the tanks!