so my dad and i have been trying to figur out why are truck has not been passing smog they told me that the truck wasts 4 times more gas then it should be useing so i went to another guy and got it smoged and they told me the same thing the guy told me to chang the 02 sencer so i did and it went down a hole lot but still not enof he told me that its still 2 1/2 over what it should be on wasting gas i dont no what to do im thinking its my carb my toyota is a 1988 22R if u guys have any ideas shoot them at me would realy love that and would realy love to have my truck runing right agen thx heres a pic of my truck