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  1. M

    Rough idle/part load. HELPPPP

    Okay gentleman, I need the help of the pros. I have an 86 grand national, its running rich/rough at idle & part load. While at idle the AFR is low 10, while at part load it'll drop to 8 & 9 and begin to break up. If I hold WOT it'll clear out at be right at 12 and change. The specs are the...
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