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Re: survey: mixture screw - where is yours set? (archive)

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Posted by Todd Kenyon on December 10, 2001 at 10:35:56:

In Reply to: Re: survey: mixture screw - where is yours set? posted by Rod... on December 09, 2001 at 01:18:18:

Well, I have improved my driveability issues, via having the valves adjusted (needed 19 shims!), cleaning and rebalancing throttle-bypass valves, and messing with the afm a little (leaner). Car seems to run better now in general, but still have some cold driveability problems, just not as severe. Idle also floats still sometimes. Going to try the propane trick to confirm there are no air leaks. Would also like to pull my injectors and hav'em cleaned - sometime when I can live w/o car for a few days.

Interested in finding out where everyone's mixture screws are set (how many turns out from full tight/rich). Especially interested in those people who know their mixture is set right, and who know their AFM spring has never been messed with. The few I have info about were in the 3.5-5.5 turns out range. Anyone?

Reason is I have been messing with my AFM spring as I suspect it was loosened by a PO. I had to put screw out 9 turns to get idle mixture right. I have since tightened spring two notches, which now requires screw be about 5 turns out, which I think is more normal. Car seems to run better in general.

Todd,
Mine is currently set at 5.25 turns.
I kept track of the tune-up settings over the last 11 years.
The range has been from 4 - 5.25 turns from the bottom stop. I have always used an averaging volt meter to set the CO screw.
Reads like you are getting your drivebility problems sorted out.
Rod...





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