1990 240sx was running rich, now won't start

[hatfield1472]

I recently bought a 90 240sx and the clutch went bad shortly after. I pulled the engine and replaced the clutch. While it was out I removed emissions. Got it back in and running and it ran extremely rich. Smoking out of the exhaust and rough idle. It ran a little rich before under heavy acceleration. I replaced Fpr, maf, tps, cleaned connectors, checked for vacuum leaks, I even traded ecu's. Never Any codes, still blowing a ton of smoke. I was messing with the tps while it was running and it died. I marked factory location and set it back but couldn't get it to start. It has spark, I assume it has fuel, I glanced at the fuses, everything seemed ok. Anyone have any clue what the heck is going on?

[hatfield1472]

Well, it was running rich enough to flood the engine. I unplugged the fuel pump relay and got it to run. But I still have no idea why it's running so rich. the only difference is no emissions. Which I've deleted on 2 of my other dohc engines And nothing like this has happened. Could it be something to do with the sohc ecu dumping fuel? Anyone have any idea?

[The Inflicted]

Does it run rich when it's cold, or only when it's heated up? Because if it only goes rich after it warms up a bit it could be the coolant temperature sensor going bad.