White smoke is probably unburned/partially burned fuel - suspect poor injector spray patterns (low break-off pressure in pre-common rail) as a starting point.
Other possibilities are incorrect injection timing and low compression, assuming any preheat system is in good order.
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Diesel engine presumably?
White smoke is probably unburned/partially burned fuel - suspect poor injector spray patterns (low break-off pressure in pre-common rail) as a starting point.
Other possibilities are incorrect injection timing and low compression, assuming any preheat system is in good order.