blue smoke is excess oil, not excess fuel. run-on is excess carbon
deposits cause by ...wait for it... excess oil.
the fact that you've had the engine rebuilt leads me to believe you're a
victim of the usual sloppy re-build practices that prevail in that
industry. especially the use of scotchbrite for cleaning - otherwise
known as "engine death".
i think your best solution is:
1. fine a new mechanic that actually knows what they're doing.
2. get a replacement "j.d.m." engine from a reputable importer. it'll
cost you a few hundred, but it'll last you as long as your original
engine, if you treat it right. rebuild's rarely last 1/3rd that long.
and in your case, 1/100th.
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