Sensex, Nifty end weak; HUL, TCS, BHEL drag 2-4%

Sensex, Nifty end weak; HUL, TCS, BHEL drag 2-4% HDFC, Reliance Industries, Lupin, Axis Bank, ONGC, GAIL, Tata Steel, Vedanta and Hindalco were biggest gainers on Sensex, up 1-4 percent.