well i recently had my motor rebuilt and its been running great but the Check engine light is now blinking, i immediately took it to AZ and it threw codes for misfire on all 4 cylinders...

i changed out the plugs yet ithe light is still blinking...any information? im not driving the car until i can get this figured out...im going to do the basics (cap/rotor/wires) and see where it goes from there...

the o2 sensor is unplugged but i dont think this would cause misfiring?

could timing be off? could the belt jumped a tooth? idk any help is greatly appreciated...