I'd be willing to bet on a fuel pump and/or regulator.
Is it really a "misfire" or just leaning out? That's what I'd want to know. Read the plugs to get an idea. Still betting on the fuel pump/regulator, though. Hope not for your sake, FWIW!
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Capri306, Moderator
The Mustang Works Online
1979 Mercury Capri
1987 5.0L Mustang LX Notchback
1993 5.8L Eddie Bauer Bronco
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