Does it smoke when cranking? How fast does it spin? If it spins fast with lots of smoke it may be the glow plugs, if it cranks slow even with good batteries you may have a starter going out or bad cables. You may also have a fuel leak allowing it to lose prime overnight. This may be from the fuel water separator on the firewall, leaking caps on the injectors, leaking hard lines on the vehicle, or bad soft lines.
1983 F250 4X4 4.10 gears 4 speed dana 50 center/44 outers Dana 70 rear
Last edited by Mitchalvin; 01-17-2013 at 01:48 PM.