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Thanks Brown. I found a gauge and the fuel pressure at the temperature gauge on the pressure regulator is close to zero. I'll start troubleshooting that and see if it's the pump or something else in that system.

I checked the immobilizer and went through the learn security code functions, tried with an auxiliary ground to the engine and ECU, and with a booster pack to keep the voltage up when cranking. No success. What voltage is needed to be maintained during cranking to fire the injectors? My plan...

Thanks Brown. I will check the immobilizer and report back.

Thanks for the replies. I have not started it after the rebuild. I tried briefly with starter fluid and it did fire. The Nanocom showed that it was not immobilized. There are a few fault codes, but not anything that I'd expect to prevent the engine starting. The ECU and alarm control unit are...

The timing is on my list of possibilities, but my understanding is that the ECU needs to see above 300 RPM for the injectors to fire? If it's only registering 230, wouldn't that prevent starting?

There is fuel at the pressure regulator.

I tried with a different ECU, and had the same results. I've cleaned the connectors and harness. There was some oil at the ECU plug, but I've sprayed the plugs on the harness multiple times with contact cleaner until there were no traces of oil.

The fuel pump is running, filter is new, system was bled many times. I tried adding a new fuel pressure regulator. It has a new large battery, new starter, and I tried with a battery booster pack too. It sounds like it's turning over quite well.

Hi, I’m having problems starting a TD5 engine that I rebuilt. It’s in a 2004 Defender. The engine turns over well and has a new starter motor. All of the injectors click when tested with a Nanocom. No security codes are shown. I believe that the issue is related to the crank sensor. With...