Corby:

The follower arms are in two sets. A bit fiddly to remove, but not impossible. Be careful to get the appropriate piston far enough up in the bore to prevent dropping a valve into the motor!

Blue smoke on startup after sitting is bad valve guide seals. Coolant usually starts to "dissappear) before you see white smoke from coolant loss out the head.

White smoke on startup is normal for an older diesel, it is unburned fuel (you can smell it). coolant leaking through a bad head is constant, and you can smell that, too!

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!