[jrwilson]

My car's idle is way high, and also it has cold start problems and jumps a bit in RPM at first start up for a few seconds - all of this tells me I'm running a bit rich and I need to adjust the mixture and idle screw.

I'm supposed to only set the mixture based on %CO at idle on a warm engine.

I can't take my car to the mechanic easily as they are an hour's drive away and there's no way to get home while they have my car so it's basically an all-day adventure, so I'm looking for ways to do this in my driveway. Ideally I'd like to be self-sufficient in this anyway and not have to rely on expensive, faraway mechanics.

I've seen the Gunson Gastester which isn't horribly expensive, just wondering if anyone can recommend it or another hobbyist level device I can use to do so.

I do have a wideband O2 sensor but it goes to an analog gauge inside the car so it's hard to get an accurate reading on it. Also it only reads one bank.

Also, I'm wondering if anyone has a link to the procedure for the initial setting of the mixture and idle screws so I can start from a "known" state.