I have a 300E. I was checking washer fluid while my car was running, and I noticed that the ignition wire on the left side of the engine closest to the front was ticking, I felt the wire and it was loose, i was able to move it around more than the other wires. Why is that? How do i fix this? is the wire bad? I tried twisting it back in, but it remains loose.
Is the sparking plug loose?

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87' 300E champagne - Euro headlights and corners, 8-hole rims, 140,000miles/220,00km.