william_04_x I'm not sure where it is coming from, I was walking by it when he parked and shut it down. didn't have time to find it. He thought it was coming from the somewhere around the turbo, I'm guessing the back of the motor. I will try to find the location of the sound.
Blue2Fifty, heinzboy what is the injector flash? I know nothing about the Powerstrokes.
thanks Smkblwr