Guys,
I need some guidance. My wife has a 4.3L Jimmy with a TBI. The engine is getting too much fuel. Runs rough and will not idle below 2.5K RPM. I can get it to idle below 2K RPM if I unplug one injector. The plugs foul and soot pours out of the tailpipe. The injectors seem clear. I have looked for vacuum leaks around the TBI. What are your suggestions for my next step?
Mike