I HAVE PROBLEM AFTER HAVE DROVE CAR FOR ABOUT 30 MINUTES ENGINE START TO PING AND SMOKES AND THEN EVERYTHING IS OK AND LATER START TO DO IT AGAIN
please replce or service injecter. becoz injecter leak even though car in key off mode. and when u starts wil give huge smoke as well pinging noise for a few moment. i countered same problem with my suzuki car. may be same problem with ur car .