Thanks for replies
Not had the chance to do compression hot yet
Fuel compensations are cylinders 1 and 4 -1 and cylinders 2 and 3 +1
Fuel is OK, primary pump working
Cranking speed and battery voltage OK
I'm in Canterbury Kent
Glow plugs operate once engine has started
No glow plugs ignition on or cranking
If glow plugs are operated via scan tool vehicle starts fine but still smokes
Many thanks for replies
David Clayson