I've had a slightly rough idle since I got the car at 62k miles. Now 129k and never have figured it out. All ignition components, all fuel components minus pumps including rebuilt and flow tested fuel distributor. Perfect compression perfect leakdown. All vacuum hoses replaced. All engine + trans mounts....

I just gave up and feel like its just part of the CIS-E system's imperfections. Drives fine soon as on the gas and I get 18-20mpg average.

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