I know it may seem unlikely, but have you checked the wires/plugs?
Completely different truck/brand, but a friend of mine just had a similar issue but it ended up being loose and/or faulty wires and sparks.

It doesn't really sound like that is the issue, but that's a easy check anyway.

You bought a remanned engine, does the company stand behind it at all or has it been too long?
Additionally, when I first bought my truck, it started misfiring, ended up being a dropped rocker arm and a bad lifter. Not sure how they remanned (or if they upgraded the parts), but some of these engines are notorious for dropping their rocker arms.

Sorry, not really a mechanical type, but I hope you figure out what is wrong!

Good luck! I hope someone more knowledgeable than myself comes along to give you some insight.

 

Thanks for responding Kelsey, I Really appreciate it. But yeah, I checked all the wires and plugs, and just to make sure, I checked the continuity of the plug wires to rule out a shorted wiring. That was my first thought too, and I was really hoping was my problem. It wouldn't have worried me so bad if there wasn't white smoke while the engine was running. Oh and it is definitely coolant (BOOOOOOOO0 Lol).

Relax. Breathe.

Have you considered the possibility of an ignition issue, such as coils, plugs, crank angle sensor?

Try swapping the coils around to see if the misfire moves. If so, then you have 2 bad coils. You could also have a bad coil and a fouled plug. Or two bad plugs.

The white smoke, is it fairly consistent?

I sure did, and the white smoke is consistent for the first few minutes of driving. After a couple miles it goes away (even while idling). But I am losing coolant very very slowly.

It has never overheated, and I even have a Jegs Chrysler 160 degree thermostat to make sure it stays cool. Oh and I put a new water pump on it before I put the new engine in. The only thing not new on the engine when i put the new one in is the A/C compressor. Everything else is brand new(OOps, I put a new fan clutch on it when the new engine went in, but I just reused the old fan blades.).

I was kinda hoping the intake manifold was my problem, but the intake manifold on these Dodge's don't have coolant running through them.

Oh, and you're right deep breaths and calm thoughts Lol.

 

Relax. Breathe.

Have you considered the possibility of an ignition issue, such as coils, plugs, crank angle sensor?

Try swapping the coils around to see if the misfire moves. If so, then you have 2 bad coils. You could also have a bad coil and a fouled plug. Or two bad plugs.

The white smoke, is it fairly consistent?

 

Great minds think alike, Kelsey lol