Plugs, wires, rotor?
PO had platinum plugs in our 560, idled rough, changed to copper and the idle smoothed out a lot. Then changed wires, improved more. Fresh distributor cap and rotor really finished the job. Hope this helps.
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Earl McLain
'02 C230 Kompressor
'89 560 SEL "Frau BlueCar" (retired April 2004)
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