7.3 idi crank but no start

[franklin2]

Here is it's supposed location under the hood. It should be a blue rubber thing in the wiring.

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[DirtyWood]

Thanks for the info franklin2, just yesterday I was cleaning and inspecting the connector that feeds the glow plugs and other wiring on top of the engine and I noticed two larger blue wires that were sticking out of the loom and now I'm fairly certain those must be the two fusible links.

 

[grahamal092]

P.S. You can see the fusible link in the diagram above, to the left of the "engine connector". It's a 20 gauge fusible link.

Yep that was exactly it. That fusible link was broken. I replaced it with a inline fuse and the truck fired right up. Thank you so much for your help.