Screw it in= richer
Screw it out=leaner

If you screw it in, more of the air must go through the AFM flap and be
counted, so the ECU is seeing a higher air flow reading. So the ECU will add
more fuel; richer.

If you screw it out, air is bypassing the AFM flap, so the ECU is seeing a
lower air flow reading. So ECU adds less fuel; leaner.

Mark Ingalls
85 GL

>From: milford <ims14519@HOME.COM>
>Reply-To: milford <ims14519@HOME.COM>
>To: vanagon@GERRY.VANAGON.COM
>Subject: afm mixture screw
>Date: Sun, 13 Jan 2002 22:13:37 -0800
>
>Can anybody tell me how the afm mixture screw is set up?  e.g,  Is
>clockwise lean or rich.  Thanks for taking a moment. Jim

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