Starting problem

Hi , my dad's got a 110 td5 and has a staring problem the engine turns and tries to fire with blue smoke but fails , we have checked filters, pump sensors , wiring and are no further forward , a little spray of easy start and it's nearly there but every rough ...any ideas also checked the ecu , that s dry and injector seats and they look good , thanks

Ask in the defender section

Defender, 90, 110, 130 (tratters)
https://www.landyzone.co.uk/forum/defender-90-110-130.7