Cyl 6 Misfire

Apr 30, 2007 2 Replies

I have a Cyl 6 misfire and I have a few questions... To start, I just replaced all the plug wires with relatively high end Taylor 8.2mm Thundercores. I¹ve used these in the past and had very reliable results. Nonetheless, when I run the truck in pitch dark and I look at the #6 wire, I see arching right behind the boot.


  1. Is it possible to have this arching at cyl 6 WITHOUT a leak in the wire?
  2. Is it wrong of my to be livid that I have a bad wire out of the box? I used plug pliers to install them and dielectric grease on each end. I don¹t know how the hell I could have been anymore carefull.

Thanks and take care, Andrew.


Cyl 6 Misfire Is it possible to have this arching at cyl 6 WITHOUT a leak in the wire? Is it wrong of my to be livid that I have a bad wire out of the box? I used plug pliers to install them and dielectric grease on each end. I don't know how the hell I could have been anymore carefull.

Did you pull the plug and switch it and check it out? Unlikely to have a bad wire at exactly the same spot. I'd focus on what hasn't changed.

I'd check for a hairline crack in the plug insulator (I had this happen once to me).

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Re: Cyl 6 Misfire Group: alt.autos.4x4.chevy-trucks Date: Mon, Apr 30, 2007, 2:40pm (EDT+4) From: no snipped-for-privacy@nowhere.net (Augustus) Cyl 6 Misfire Is it possible to have this arching at cyl 6 WITHOUT a leak in the wire? Is it wrong of my to be livid that I have a bad wire out of the box? I used plug pliers to install them and dielectric grease on each end. I don't know how the hell I could have been anymore carefull.

Did you pull the plug and switch it and check it out? Unlikely to have a bad wire at exactly the same spot. I'd focus on what hasn't changed.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% "Sometimes, it is better to remain silent and be thought of as a fool than to open your mouth and remove all doubt." ~ Unknown ~

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