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Diesel IQ - Powerstroke & Cummins Diesel Engines

Powerstroke & Cummins Diesel Engines

Top 10 7.3 Diesel Hard Start / No Start Diagnostic Procedures

December 2, 2020 by DieselIQ 1 Comment

Top 10 things to check when diagnosing a Hard or No start condition on a 7.3 Power Stroke Diesel.

There are quite a few things that may cause the 7.3 V8 diesel engine to not start. Usually it’s pretty basic stuff, but tracking down the issue can be a headache without a good starting point. If your Ford 7.3L Power Stroke diesel engine isn’t starting check the following items:

  1. Visual Engine / Chassis Inspection
  2. Check Engine Oil Level
  3. Intake / Exhaust Restriction
  4. Sufficient Clean Fuel
  5. Fuel Pump Pressure
  6. Perform KOEO On-Demand Self Test
  7. Retrieve / Clear Continuous DTCs
  8. KOEO Injector Electrical Self Test
  9. Check VPWR During Cranking
  10. Glow Plug System Operation

  • Visual Engine / Chassis Inspection
  • Check Engine Oil Level
  • Check for Intake / Exhaust Restriction
  • Sufficient Clean Fuel
  • Fuel Pump Pressure
  • Perform KOEO On-Demand Self Test
  • Retrieve / Clear Continuous DTCs
  • KOEO Injector Electrical Self Test (Injector Buzz Test)
  • Check VPWR During Cranking
  • Glow Plug System Operation

Filed Under: 7.3 Powerstroke, Powerstroke Diesel Engines

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Comments

  1. Shaun says

    January 1, 2022 at 11:16 pm

    I have a 1988 Ford F350 7.3 l. Non-turbo. Can be extremely hard to start two brand new batteries. If I give it just a little shot of ether. It’ll fire right up. Even after I lent the glow plugs cycle as I crank it over it gets to the point where it will barely turn but as a starter takes over it’ll fire up. Also, in the visor it says to hold it to the floor and cold temperatures while starting. Is this recommended? What could be the problem? It used to crank over fine

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Ford 7.3 Powerstroke

7.3 Problems & Repairs

9 Common 7.3 Powerstroke Problems

7.3 Powerstroke IPR Rebuild

7.3 ICP Sensor Problems

No Start Diagnostics

P1211 Fault Code

Ford 7.3 PS Modding

7.3 Powerstroke Mods Guide

7.3 Powerstroke Intake Guide

More Powerstroke Content

13 7.3L Powerstroke Facts

Powerstroke HP & TQ Timeline

6.7 Powerstroke Engine Problems

6.0 Powerstroke Common Problems

6.4 Powerstroke Problems

3.0 V6 Powerstroke Problems

 

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