Knocking nidle speed

Asked by kellymglymph321 May 09, 2017 at 04:22 PM about the 2001 Mercedes-Benz CLK 320 Cabriolet

Question type: Maintenance & Repair

Replace all spark plugs. N one harness to plugs
...car is knocking like crazy. .in Park Neutral. N
while driving. ..never did that before these
mechanics touched it ..

1 Answer
3,265

John answered 6 years ago

bad plug, bad coil or bad wire from coil, or didn't connect all coils properly. Don't drive until fixed. Knocking from this is serious

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