ok i found out that my ignition timing was far off (near the TDC) and i got that fixed and it runs smoother now. The things is that before i adjusted the timing i was getting around 15 mpg and now im gettin around 10 mpg~! Also my idle is usually 1k (if i go any lower it'll stall after i slow down) and sometimes its at 1k while im at a stop light, it'll suddenly go to ~1800 rpm. This didnt happen before i adjusted my idle. My idle used to be 1200 rpm w/o stalling. I also changed my O2 sensor hoping that it'll help but it didnt help at all. I have a theory that my injectors might be messed up b/c a couple days ago the third cyclind was mifiring and then it worked again the next day. I did a compression test and it was 150-160 on all 4 cyl (is that good?) Can any1 help me with this? btw i searched alrdy and the answers weren't straightforward.

 

Id pull the injectors, thats what it was on my s13, id idel weird and didnt have ne pick up. Just pull them all and check them and see if theyre clogged. If so get some new ones and if that doesnt work pm me and ill let you know what else i checked.