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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
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Idle Mixture screws

  • Thread starter Thread starter Celeb
  • Start date Start date Jan 22, 2010

Celeb

20+ Year Stangneter
Sep 8, 2002
736
13
59
Here and there
Jan 22, 2010
#1
  • Jan 22, 2010
  • #1
Holley carb (650 double pumper)

Just swapped cams, is it a good idea to now reset/re-adjust my idle mixture screws since Im now obviously going to have different vacuum at idle?

Car runs and drives fine still, just smells odd now. I dont have a good nose for the rich/lean but do have a vacuum gauge and I know how to check it, but was wondering if it was a good idea or not or just leave it alone.
 

fvike

Member
Aug 24, 2004
335
0
16
Mosjøen, Norway
Jan 23, 2010
#2
  • Jan 23, 2010
  • #2
You could play around with them, but make a mark so you can set them back to your original position.

To get idle mixture right, a lambda exhaust probe is a great tool.
 
M

MustangBill87

New Member
Jul 14, 2009
39
0
0
Jan 23, 2010
#3
  • Jan 23, 2010
  • #3
Connect Vacuum guage to port on carb , One side at a time turn idle mix screw in until vacuum pressure drops off then back it out until vac press reaches it highest point do the same thing to the other side after finished back both of them out 1/4 turn and adjust idle and check timing again
 
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