BUZZ-Westport Innovations Inc: Lowers 2014 forecast
** Canadian auto parts maker's U.S.-listed shares down 19.9 pct at $8.63 in extended trading
** Natural gas-powered engine maker cuts 2014 revenue forecast to $130-$140 million, below analysts' expectations of $178.7 million
** Says expects adjusted loss before interest, tax, depreciation and amortization at three operating businesses this year
** Says forecast cut due to weakness in Europe, Russia and China affecting sales at its Applied Technologies business in the second half of the year, delayed milestone payments and the possible loss of a large order
** Up to Tuesday's close, the stock fell 46 pct this year
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