Engine Light on when warm

[denz]

Hi,
1998 MK5 Transit 2.5TD Auto
I recently Installed Reconditioned Lucas Epic pump,Timing Belt and Water Pump.
All went well, Started motor and idled for a while to check fluid levels and topped up coolant levels as needed.
My problem is when i start motor all is OK, But when it warms up the Engine light comes on and stays on and blows White smoke when reved.
I did recheck the timing 13mm drill into flywheel and 6mm into pump, slipped strait in.
It seems to drive the same as before Pump changeover, And i don't seem to see excessive smoke (tinted windows)
Does not go into limp mode. Tried disconnecting Battery for a couple of hours.
Any help or ideas much appreciated.
Cheers
Denis