Car....2000 hx

Codes.....74 (random mis in cyl #4), 71 (random mis in cyl #1), 72 (random mis in cyl # 2), 48 (lean air feul sensor).....

Mods.....cai, headers, high flow cat......

What I knows wrong........small leak in oil pan gasket....

What I did to try to fix the missfires.....Plugs, wires, (gonna do cap and rotor today)...


anybody got any clues, at first it was just missfiring in cyl #1 then I checked them again yesterday and now im missing in 4 and 2 as well.


thanks in advance...

 

bump for more info. mine HX is doing the same thing.