Hi Guys, I need some advice before I pull what’s left of my hair out. Customer of mine has a W plate 110 td5, been running fine and then all of a sudden won’t start. Has full ignition lights, turn key and nothing. Did relevant testing and found the starter relay in the Centre has lost its earth, strange. Put temp wire from battery and it turns and starts but then 5 seconds after it cuts out. Try to start again and it just turns over but won’t fire. Leave a minute and it starts but cuts out again after 5 seconds. You can hear the fuel pump priming etc. help...