Replaced the fuel distributor and all six injectors, and as you guessed it, still will not start. Checked the spark plugs they were fouled out. Replaced the plugs and she fired up. Now that the car is running I noticed that any time I dipped into the throttle she bogged down or died. I hook a meter up to the FHA signal and found that o2 sensor was not switching. I replaced the o2 sensor and now she runs great. However it will not start cold unless I mash the gas pedal to the floor. I finally was able to set the co2 mixture and car starts all the time without pressing on the gas pedal now. I drove the car ten miles without a problem then all of the sudden the car hesitates (WHEN FULLY HOT) from a stands still (almost like a dead pedal). The engine sometimes back fires now. What in the world could be the problem now ??? I am soooooo frustrated. I hate cis injection!!!! Can somebody, anybody give me a clue to what is going on??? I am a ASE Master Tech with 12 years experience and I can't figuere this one out.