Starting problem - possibly fuel

My TD5 110 wont start however with a little help with easy start it works fine and will continue to run under its own steam. However, as soon as it is switched off then it will refuse to come back on and the same process has to be done again to get it started. Video explaines for https://youtube.com/shorts/dXx5e8qzWAM (wont let me embed the video but it is shown in this one well.
Thanks in advance for any suggestions

First and easiest thing is to check the ecu red plug to see if it's covered in oil, if so clean it out. Other possibilities is the crank sensor or injector seals

steve24v said:

First and easiest thing is to check the ecu red plug to see if it's covered in oil, if so clean it out. Other possibilities is the crank sensor or injector seals

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Thanks. Will give them a try tomorrow after work then will update.

Could be air getting in your fuel system or faulty fuel pump , block fuel filter , leaking injected seals/washers ,