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Re: 1993 Ford Escort 1.9 Litre
Well usually the rough idle is due to a vacuum problem. Check the vacuum port on top of the intake. There is an elbow on there that likes to crack on the back side. One of the ports may also have a cap... and those caps like to crack open too.
One other thing to conside is a plugged up PCV.... but I doubt that is the problem.
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