I get codes like 2nd injector something something, and once in a while i get a code saying my fuel system is running too rich. how do i fix that? on 3rd gear at 75mph my car seems to have a lag or having a hard time. The things I did... changed my spark plugs with +2 and I just heard that I should go with oem sparks. should i go back to oem sparks and should that fix the problem, also when i changed my sparks I started to get a knocking sound close to #4cyl, and once in a while I get a choking start up, when it feels like your car is going to stall or have a hard time starting. I also once in a while get a stalling feeling when I put it on nuetral. Any feedbacks will be greatly appreciated, oh my car is an 00 with 51k and been using 91oct and new filter and synthetic oil. all recently replaced like 3 weeks ago.

 

What are all the code numbers?

PXXXX

 

p0107 i think im sorry i deleted them and the world most famous p010? its the 2nd fuel injector thingie