In a warm climate it should. In a cold climate, a gentle shot of starting fluid should get it started. To much starting fluid can cause serious damage so be careful! If the glow plugs are working starting fluid can ruin them.
what year model is it? Is it an IDI or DI powerstroke? with the later model powerstroke the pcm provides ground for the relay need Moore info to answer
against the bulkhead, next to the ecu
Could be bad glow plugs.
the glow plugs are located under the valvecovers should be 8 of them
Does "Wait to Start" light come on? Most likely the Glow Plug relay is bad
If none of them are working then it is more than likely a defetive Flahser Relay. Replace the relay with a new one. The Flasher Relay is located: Front seating area, driver side, under dash, mounted behind dash bracket.
because your fans arent working, which could be a faulty relay, fuse or faulty thermoswitch. on mine it was the relay which is expensive for a relay. if that isn't the problem try changing your thermostat.
Under the bonnet, looking at the engine the Relay for the glow plugs is at the far right hand side corner of the engine bay. You have to pull up the rubber insulator at the rear of the bay to take off the plastic cover housing (about 3 clips) where you will find the relay. Check the fuses as well.
glow plugs, glow plug relay, poor compression on engine are some things that will give problems
Check Your Relay, Check the plug wire that goes to your plugs with a Volt meter it should read 12v if so see how long its stays on. It possibly not working correctly, Not on long enough or to long burnig up your plugs.
Your glow plugs are not heating up. You may have bad glow plugs or relay. try turning on the key ( this should start the warming of the plugs and a light on the dash will come on letting you know it is ok to start if not the relay is bad) if no luck turn off the key and let it cycle again. if it is still difficult to start you may need new glow plugs.
I note the relay (part No NCL100040) is called an "ignition and glow plug heater relay". The 75 will usually start if you turn the key before the glow plugs have heated, therefore the glow plugs are probably only needed for cold starts. Glow plugs are not needed when a diesel engine is hot. The "ignition" reference may mean that some other circuit is controlled by this relay (obviously there is no conventional ignition as it is a diesel). FYI The part is also used on the Range Rover TD6 post 2002 An internet search suggest the cam sensor can cause starting problems and fault codes similar to a faulty glow plug relay.