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Jeff Chambers · 01-04-2005, 02:32 PM

How do you know the carb's adjusted correctly? You have deactivated much of the smog equipment and are running heads that didn't come on the motor, so its not inconceivable that the carb doesn't need re-jetting and/or a different power valve. I'd step down two jet sizes, drive it for a while and the re-assess rich/lean conditions.

01-04-2005, 02:32 PM	#4
Jeff Chambers Moderator Join Date: Aug 2000 Location: Milan, OH Posts: 2,699	Re: motor runs rich plug are black soot How do you know the carb's adjusted correctly? You have deactivated much of the smog equipment and are running heads that didn't come on the motor, so its not inconceivable that the carb doesn't need re-jetting and/or a different power valve. I'd step down two jet sizes, drive it for a while and the re-assess rich/lean conditions. __________________ Jeff Chambers 1990 Mustang GT 10.032 Seconds / 137.5 MPH 14-time Street Warrior World Record Setter CRT Performance 2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH 2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2 "There's nothing boring about a small block automatic shifting gears at 9400 rpm!"