I would probably change the leads after the plugs with these symptoms. Try it, it's the next step and worth doing if you are diagnosing ignition problems like this

Good luck, let us know what works

Russ

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190E's:
2.5-16v 1990 90,000m Astral Silver
2.0E 8v 1986 107,000m Black 2nd owner
http://www.maylane.demon.co.uk/190esmall.jpghttp://www.maylane.demon.co.uk/190esmall2.jpg