Ok guys I came to this forum really needing help, I looked into a lot of other forums and can’t seem to find or get any real help before having to go to Nissan, so I recently did a rebuild on my engine, and when I put it back together everything went on smooth, now when I try to turn it on I’m getting fuel and Its cranking but I’m not getting any spark, can anyone help me solve this issue

Have you pulled ECU codes?

Helped a bud swap engines and we swapped the intake cam sensor for the exhaust cam sensor. Check your work.