holley ??????????

tinner · 01-27-2002, 12:48 AM

how do u adjust the air/ fuel mix on a 600cfm holley? thanx

PKRWUD · 01-27-2002, 05:49 AM

1) Gently turn both mixture screws in until they bottom out.
2) Back them both out 1 1/2 turns.
3) Warm up engine
4) Turn idle speed down as LOW as the engine will maintain.
5) Adjust the screws in two round trips (adjust one side, then the other, then come back to the first side, then go back to the other side) to get the highest RPM.
6) Add an aditional 1/8 turn out for each screw.
7) Reset idle speed to desired level.
8) Shut off engine and check that both screws are the same. If they're not, set both to the average of the two.
9) Restart engine to check idle quality.

Take care,
-Chris

01-27-2002, 12:48 AM	#1
tinner Registered Member Join Date: Nov 2001 Location: santa rosa ca. Posts: 121	holley ?????????? how do u adjust the air/ fuel mix on a 600cfm holley? thanx __________________ 65 fastback Keith Craft 408w 11:1cr AFR205's , Vic Jr. , 750 Speed Demon , MSD Digital 6+ , Aeromotive fuel system , Hooker Super Comp ,Headers , Art Carr roller C-4 w/ 10" converter and trans brake

01-27-2002, 05:49 AM	#2
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	1) Gently turn both mixture screws in until they bottom out. 2) Back them both out 1 1/2 turns. 3) Warm up engine 4) Turn idle speed down as LOW as the engine will maintain. 5) Adjust the screws in two round trips (adjust one side, then the other, then come back to the first side, then go back to the other side) to get the highest RPM. 6) Add an aditional 1/8 turn out for each screw. 7) Reset idle speed to desired level. 8) Shut off engine and check that both screws are the same. If they're not, set both to the average of the two. 9) Restart engine to check idle quality. Take care, -Chris __________________ Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local RED & WHITE!

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