SOHC loses rpms when accelerator is pressed

[drunkenogre]

Hey guys i got a question for the gear heads on hear. I dont profess to know at all what im talking about so take it easy on me if its not anything major. Yesterday when i started my ka24e it sounded like it was idling really weird (rpms going up and down, and sounded like it was going to stall) so i immediately cut the engine off. I checked the oil and it was pretty low. So i borrowed my sisters car and ran to autozone and put some more oil in it. Started the car back up and it appeared the problem was fixed. Then while driving it, it started having really strange symptoms: while out of gear, the car would lose rpm power if the accelerator was pressed,(it would pretty much almost cut off) but while in gear it would accelerate fine with no hiccups. And this morning when i started the car it immediately died, and now it will not start. All the fluids are good, the battery has a full charge, and the engine turns over but it will not fire. Any help would be awesome guys, thanks

[OutToWinPAHC]

Someting confusing the tune, start with the MAF if you think the motor is healthy. You may want to check the basics like compression to fuel pressure to maintenance items.