2004 nissan titan v8 seized up
I have a 2004 Nissan titan that's seized up. ive taken the intake off and the valve covers off, took the serpentine belt off, and tried to turn the harmonic balancer to see if it turns still no turn. the guy that ive gotten it from said he was driving down the road and it just shut down and ive checked the starter, battery, and grounds all is good. ive taken the sparks out also and sprayed wd-40 into it still no turn. im not wanting to get a new motor to replace it with due to limited money at the moment. can anyone help me try tp figure out the problem so I can get this truck up and running again it will be greatly appreciated.