Around one month ago I have replaced my spark plugs and respective wiring. Everything was fine to until one week before, when the car started to misfire (struggle?) in the morning when car is cold. I checked the wires right after starting the vehicle and I felt electrical shocks, so I guess the wires are arcing. When I run about 5 kms, the problem goes away. The question is: what should I do to make it run smoothly from the start? I guess it might be caused by accumulation of the moisture during night(since it is parked outside).

The car is Mitsubishi Lancer 1.3 GLX '99.



You could try greasing the outside of the plug leads with dialectric (silicone) grease. This is standard procedure when servicing certain Citroen vehicles.

  • Oke, thanks for advice, makes sense. Going to buy silicone grease today and try to report the results tomorrow morning.
    – Serhiy
    Jun 19 '15 at 9:02
  • Good luck! Hopefully it does the trick and if so is a nice, low cost solution. Jun 19 '15 at 9:17
  • It may also be worth mentioning that Q20 (the original WD40) was created specifically to address this problem. Jun 19 '15 at 9:17
  • @Juann Strauss I actually do have WD40 at home. But it is spray.. I am not sure how to apply it without spraying too much on metallic parts.
    – Serhiy
    Jun 19 '15 at 10:26
  • Liberal amounts of WD40 sprayed all over the outside of the plug leads will, at least temporarily, have a similar effect as silicone grease. You won't damage anything by spraying it with WD40 so it's well worth a try next time your car is cold, slightly damp and hesitant to start or run smoothly. Jun 19 '15 at 10:29

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