99 civic ex
Driving down the road the other day and had random misfire on my car and the engine light popped up.

Did the dignastic and got the p1399 code for misc. msfire code, and my o2 and knock sensor code went off as well.

Well so pulled the plugs and #3 cylinder was running really rich since its was black. So I changed those out and still got nothin. I also made sure I was recieving spark in each wire.

Pulled the plugs one by one when the car is running and no change in idle on cylinder 3. So I changed all four injectors..

Still an issue pulling the injector plug off cylinder #3 change I get no change in idle.

I have noticed my oil was alot lower than normal, I can be wrong but I could be eating oil.
Anyone have a clue what I should do next?

 

oh yeah this is also a manual d16y8 motor. and I replaced the injectors with y7 injectors, the injectors look different but im almost positive they are interchangeable

 

Try a different ECU? the injector may have shorted out and fried your ECU.