which is the idle adjustment screw?

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06-12-2008, 06:09 AM

rx707

Junior Member

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Join Date: Dec 2006

Posts: 5

my idle is a bit high and i was wondering which screw is the idle and which is the air/fuel mixture . i dont want to tinker with the air fuel and mess everything up

06-12-2008, 11:08 AM

RX-7 Chris

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Join Date: Dec 2007

Posts: 15

it is down under where the throttle cable is attached on the right.

The one in the center of the pic is the mixture.

06-12-2008, 12:02 PM

j9fd3s

Senior Member

Join Date: May 2002

Location: California

Posts: 22,465

thats an 80 and earlier carb, so theres an idle air, and idle fuel. the big one is air, small one is fuel.

they interact, so it takes a while to get it right.

the car does a lot of its cruising on the idle circuit, so you want the idle as lean as you can get it.