Cuttting & plumes of white smoke (Diesel?)

[Poodle]

Well i'm assuming what's happening is the injectors are leaking into the cylinder when they shouldn't be, hence the "ticking" - that's from leakage on the compression stroke. When the leaking gets too much the fuel rail pressure drops, as the hp pump cant match the rate of leakage, so the engine cuts out. Normally that would mean no more diesel being injected, but if the injectors are leaking diesel straight into the cylinder on the exhaust stroke it'll chuck it out unburnt as white smoke.

Must just point out i'm theorising based on what you're telling us and what I know of how these engines work, I can't guarantee it's right or even close to the mark.