Hi everybody this is my first post. I have 93 5speed yota p/u with ext cab, with a 1990 22re swap. iv'e had this problem for a while now i will start it sometimes it will run fine, but most of the time it has a hard time starting and when it does it acts like its missing has a total lack of power, also i rarely will hear a "quiet backfire"popping noise but... ill shut it off and turn it on again and it will be fine. most of the time i just do this once. i was thinking the o2sensor. or airflow deflector.. help its annoying and very slowly getting worse. and btw i got 260miles on this beast.