Got a 1994 Mustang v6 3.8 liter with flowmasters, gas is pissing out of the left tailpipe as well as the last cylinder on the left side of the motor, i thought there was a fuel injector stuck open pissing out the gas, changed it, still pissing out gas, hooked a fuel gauge up to it, it's reading -1.5 psi with the key in the on position? and getting a reading of 29psi with the engine started, any advice would be much appreciated, thanks, phil

 

Howdy,

Try this, first unplug just the electical conector to the injector in question and then try your fuel pressure test. if every thing tests out fine for pressure with the conector off the there is a shot somewhere in the injector harnes that is giving that injector straight power and hanging it open. did you buy it this way or did it happen to you after it drove fine befor.

Clinton
let me know what you find out