I was driving my car the other day and all of a sudden it started back firing and bucking any time i got to 2500-3000rpms or under any boost. Stopped car and checked under hood and found front secondary injector plug disconnected. Reconnected and tryed car out still does the same thing. I changed all spark plugs were fouled out. Then tryed again same thing. Checked for codes and got #71 front secondary injector code. Unsure on what to do now. Would not clearing code after pluggin the injector back up cause same problem. Please Help

 

plug it in, clear the code. if it comes back, then you have a harness issue