I noticed that lately I have a strong gas smell when I havent done anything ot the pressure so I had a friend turn the car on today and noticed that when it hits ACC and the pump primes and the fuel rail fills I can hear a sort of pissing sound from either the 3 or 4 injector. No fuel is coming from any visible place. I also noticed that after turning the car off there is a dripping sound that slowly stops coming from the engine but nothing is dripping to the ground. Would a bad injector throw a code? I am not getting a CE light or anything.