Hello my name is rudy Im trying to find out about a problem I have. I have a 06 f150 5.4 and when I replace the spurk plugs I was gettimg some codes about miss fire8 missfire 5 and some times random miss fire I replace all the coils I checked to see if I had spark on all plugs n I did with a in-plug tester and all worked I even test the coils with meter tester and r fine.it also gave me a code p0175 bank 2 too rich. Yesterday I try some thing I unplugged the the injectors 1 by 1 with engine running and when I did that it wanted to turn off I did that onn1 side wich I believe is bank 1 but when I did that on the other side of the engine when I unplugged the injectors nothing happen nothing change on engine it just keep running I dont think it should do that can somebody please help thank you

 

Welcome!

 

Hi Rudy. Welcome to the forum.