bro sky......
mayb is ur valve seals....
if not then ur gasket/piston rings....
anyway...
since u know the timing belt oil seal leaking...
fix dat prob 1st la.....
From the description, i would to say piston ring. Valve seal normally u will find oils at plugs there and hardly will generate smoke to exhuast (assume his smoke flood frm exhuast). Thn i was thinking headcover leak but then that normally will happen if over compression also wont cause exhaust smoke. So left with piston ring
