2008 Hyundai Elantra, 2.0 lt. We replaced a bad water pump, and timing belt while we were there. I followed directions found on multiple websites. We spun the crank shaft to the top dead center mark on the crank sprocket / engine block, and the cam sprocket / assignment mark. Then removed tensioner, and belt. Installed new belt and ensured alignment marks had not moved. Applied pressure to tensioner and tightened. Reassembled everything else. Car started with no problems, drive for about twenty minutes started making clicking sound from under hood, we turned around to come back home and the car still making clicking sounds gradually started to loose power and speed until the engine stalled and would not restart. Trying to find out what could have happened.