Duke2.6
Thanks for the help,
Question is why would I need to adjust the timing or fuel? I know neither one has been adjusted since it rolled off the assy line.
Would bad or worn plugs make the CO higher than normal if CO is an indication of unburned gas?
Thanks

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1969 RS/SS Camaro Conv. L-89 Alum. Head 396 375HP 4-spd

1987 GNX #419, 2002 RX300

FS: 1934 Ford Street Rod, Blown 383 $48,500 Firm

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