Could be a million things - have you checked fuel pressure? Injectors are notorious for clogging, plus its always a good idea to have them machined and flow tested.
Smoke - head gasket? Oil in turbo? TCs seem to do this anyway upon firing up - mine doesn't though.
Idle could be TPS or even 02 sensor being bad...
good luck
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Mike
'88 5spd TC
'91 5spd Escort GT
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