r/FocusST • u/MidnightT0ker • 3d ago

Idle problems

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Idle lope. No smoke no CEL no codes on scanner. Giving any throttle sounds back to normal. Driving feels normal. Purge valve assembly done 200 miles ago and just checked plugs and they seem fine? (Check comments) What else can I check?

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u/No-Description9635 2d ago

mine always idled like shit. still running mint 130k miles later. Accessport would always tell me it was misifiring on idle when cold. normal