Re: 1993 E350 starting problems
I believe that the injection pumps are worn out. When you shut off the motor, the IP heat soaks which expands the metal in the pump and increases the internal clearances. Then the fuel bypasses the plungers and there is no injection pressure.
There is a test - when the truck will not start, pour a pan of "room temperature" water over the IP which will cool it down. Then try to start. Do not use cold water as it can cause physical damage to the IP.
1997 Ford F350 SRW 7.3L PSD
1985 Ford Ranger 2.3L 5 speed
1966 Mustang 200 I6, auto, 4 wheel disk, power brake retrofit, Corvette master.
Former vehicles, 1994 E350 7.3L IDI, 1985 International 1654 rollback, 6.9L IDI, (2) 1994 Ford E350 7.3L IDI, 1985 Ford F350 DRW 6.9L IDI, 1985 Ford F350 wrecker 6.9L IDI.
*dual ASE Master Certified, Automotive, Medium & Heavy trucks*
Owner / operator, Patriot Automotive, N Ridgeville OH