Engine won't turn over

Tiny
COLLINKAIN
  • MEMBER
  • 2003 FORD F-350
  • 6.0L
  • V8
  • TURBO
  • 4WD
  • AUTOMATIC
  • 280,000 MILES
The engine on my pickup won't turn over when I turn the key to the start position. I can hear the starter engage and can hear another clicking sound, which I think could be the injector drive module relay, but the engine won't turn over. I have tested both batteries and they hold 13.9 volts each. I'm not sure how to continue troubleshooting. Fuel system or ignition system?
Friday, February 13th, 2026 AT 12:28 PM

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