FAQ Help

had just transplant a 4g93 abt a month ago. the problem is, can't seems to find a solution for the black smoke. sent to some w/shop n most said tht some sensors r spoilt n most probably af sensor, but i don't want to change the wrong parts as they can't guarantee it's the right part. anybody experience this b4? the plug also full of carbon(dry, symptom of rich fuel?) no matter how often u clean em. n one foreman even said maybe a wrongly marked timing belt (while changing). tired of this...