Having issues starting my engine.

I have an 89 Cummins engine that I’m doing a swap on.

I didn’t have any issues with it running before the upgrade.

I did the following upgrades:
  • THD Injectors
  • Fuel Pin
  • Spring
  • Turbo
  • Inter-cooler


It turns over but won’t turn on.

No smoke while starting.

Any ideas where to start?