Outer Limits 4x4 Board

Hi I have a 2006 hilux 4d4 motor and blows a large amount of black smoke especially from a set of lights. Cars behind me back off now cause of it. I have done the basics like air and fuel filter, valve clearances. Any other problems thanks

it would be close to still being undr warranty? if so chase toyota.

sorry i'm not up with the common rail toyotas but there is a few things you can look for.
one is egr system is stuck open a bit.
the other is of the ecu learns the fuel pressure data.
some of the common rails learn the fuel pressure and when you do a fuel filter change it changes the fuel presure and it will inject to much fuel. you need to delete the learned fuel data. i don't know if toyota runs that system or not.
or a MAF sensor is failing.

Unfortunately not under wty as its done 180,000kms. I have also been told about checking egr so i might do it next thanks