2000 ford super duty 7.3 diesel will not cold start

7 3hard start cold no codes
Ford 7 3 powerstroke crank no start due to low icp injection pressure...

Have you checked the glowplug relay.

Your glow plug controller is out, or there is an interruption in its power source, etc. Diesels are coldblooded by nature, and most need glow plugs to heat them up before starting in cold weather. The controller supplies the power to the glow plugs, but if it goes bad, or its supply of power isn't there, it won't start in cold weather, and that wait to start light which is also controlled by it won't come on.

I know for some models that Ford had another Diesel timer for the glowplugs for severe weather. This timer was meant to keep the glowplugs on longer.

I had an 87 Ford Diesel and the top wires on the timer were tight and clean. For some reason when I loosened them and retightened the wires the timer worked better.

Many truckers use a Diesel additive and usually the fuelstops have modified Diesel for cold climates. I understand there is a Cetane rating for Diesel and Premium Diesel may help.

It is the fuel heater, All you have to do is unplug it.

There should be a delay (hold off) until the glow plugs have done theirwarm up thing. Usually a minute oe so. Don't immediately crank the engine. give it about 30 seconds in the on position before cranking.
The glow plugs are like the coils on an electric stove. The heat up is not instant alrhough a little faster.

Diesels are famous for hard start when cold. Consider having a diesel shop install an engine heater.

if it gets that cold you will have to plug it in, if equiped with an engine block heater

Replace the glowplug relay.Its faulty.The glow plugs stay on until engine warms up.The engine temp switch then activates the relay to switch off.So it could be the temp switch also faulty.

Need to check that glow plugs are working to spec and getting good power source