Detroit won't start

What does it do or not do.
Dead batteries?

 

More definitive details please.
Won’t start:
- no electricity
- clicks starter won’t turn
- engine turns over won’t fire
- etc

 

Fuel filters changed and full?

 

Check the fuses to the ECM.

 

Jumper cables,hooked up and charging for at least half hour, key on, if no check engine lights on dash, check fuse for ecm,otherwise crank it up, use either sparingly, if needed.

 

Sounds like ecm fuse located on hot cable near battery, small blade type. 10 or 15 amp? Or a bad ground on the frame. If that’s the problem , usually the yellow/ red check engine lights won’t illuminate on dash with key in on position.

 

Otherwise if ecm is getting power, and no codes are thrown. Maybe a bad timing sensor or 2. Maybe just a bad connection on a timing sensor.