youll wnat to use a wooden dowl to find TDC on cyl1 (through spark plug hole) then you will pull the cam position sensor off and make sure the magnet is near the center of the sensor opening.

make damn sure you have the ignition cables hooked up correctly....sounds like you may have misrouted em

2,4,6 (rear bank)
1,3,5 (front bank)

3/6
2/5
1/4

firing order is 3,4,5,6,1,2 (or 1,2,3,4,5,6)