Nissan Repair: rough idle service light on, harsh solvents, fuel additives

Question
Nissan 2000 2.4 ideles rough at times and according to the self diagnostics has 1 long flash and 15 short. ---fuel problem in injectors, fuel relay, fuel pump ?  

Answer
Ruben,

You probably have some plugged up injectors and should have them checked and the bad ones replaced.  Also, check the fuel pump since these are knows to release debris to the pump if subjected to harsh solvents in some fuel cleaners.  Nissan recommends that no fuel additives be used because of this.