back firing and running extra rich

[4runneracerunner]

Yes i have readed everything about running rich conditon

I have a 1995 4runner 3.0

i have replaced the 02 sensors
checked exhuast leaks / none
Done a tun-up / plus,wires,cap,rotor,air fitler
cleaned the throttle body
timing is on point
replaced the coolant temp sensor and switch
replaced the tps
checked for vacuum leaks/none
changed the MAF
replaced the CAT
I did a compression test on all cylinders / 170+


I have let to test the cold start injector and the normal injectors but they do look like they have been replaced recently

I need help, my truck starts and idles amazing and likes its suppose to, but is blowing back smoke out of the exhaust, i need help and on what else i should check or replace to make this stop, i hate it, it sucks. there is no back fire

please if anyone else has had this problem before, please let me know how you replaced it and fixed it.

 

[mikekfr]

Last time anything of mine blew black smoke, it was the engine coolant temp sensor, which you said you've replaced. Any chance you got a bad one? Have you checked the resistance on the new engine coolant temperature sensor?

 

[4runneracerunner]

yea i have and it was bad so i bought a new one by BWD and doesnt suck or isnt a bad one, and iv replaced all those coolent temp sensors on that water bypass outlet, they sit in