how to adjust fual mixture
 

well, my old quadrajet was running rich, and the adjustment screws were cut off and filled in, so i put another carb on it (a carter) i think ive got it running good, with each screww turned out about 2 1/2 turns counter clockwise, but am wondering how do i really know? is there a set way for doing this? thanks

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Harry John Albert III
located in Eastern NC
1969 GMC C-10 Cab on a 197? 4x4 frame, with a 1978 305. and 4 on the floor.

1967 C-30 dually with a 74 350 police motor(dont know if that makes it special.)4 on the floor,
and a wooden flatbed.
1990 mazda RX7 conv.
72k miles mint. white
all stock

Turn them clock wise 1 at a time till you drop rpms,then cc till you get the best idle speed. Do 1 side, then the other,then go back & do the 1st side a 2nd time. Then turn them slightly clockwise to get a 50 rpm drop in idle speed........69 longhorn.