I'm wondering the same thing, jimberg. Also, you can test injector pulses with one of those noid lights. It's basically either an LED or a neon bulb, I don't know which, but it'll flash if it's getting the right pulse. How did the plug look that came out of #7? Wet or dry? You shouldn't be getting a code 76 from a 1990 EEC-IV computer, either. VAF was never used on Mustangs. This makes me wonder if the computer or that chip is messing something up. What's the Ford part number on your EEC-IV computer?
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Capri306, Moderator, The Mustang Works Online
1979 Mercury Capri, 5.0L -- C4 -- 2.73
1987 Mustang LX Notch 