Plug wire, spark plugs and dwell, New info on post 24 |
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Plug wire, spark plugs and dwell, New info on post 24 |
VaccaRabite |
Apr 18 2019, 04:02 PM
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#1
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En Garde! Group: Admin Posts: 13,465 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
So my car starts bucking again on todays shakedown cruise (and with the PA roads this spring it is REALLY SHAKING!). I pull back home guessing the #3 lead came off again. With the car running I touch the lead pull it off the #3 plug. While I'm doing this the plug wire is shocking the hell out of me!
Like an idiot I stand there looking at it (as it continues to shock the hell out of me) until I drop it and I hear it arcing against something in the engine bay. I turn off the car and remove the entire lead (I have coil near plug, the lead is only about 6 inches long). Flexing it all over, I can't find ANY breaks in the insulation. these leads are almost brand new, and only have about 200 miles on them. They are very flexible and the insulation seems to be in great shape. The pulse was jumping through the insulation on the wire and arcing against the powdercoated #3 intake runner, causing the bucking. The coil pack is certainly strong! I moved the wire as far as I could from the intake runner (the pack is bolted right next to the intake runners, so I can only move it so far) and the car ran flawlessly. I went on a 30 minute drive and it was AWESOME. So... what next. On a wet day its going to be arcing everywhere. I've sat through that ride before. Maybe make new leads with thicker plug wires? Do I need spiral wound? @mcmark @spoke |
Spoke |
Apr 24 2019, 06:31 PM
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#2
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Jerry Group: Members Posts: 6,991 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None |
Are there specified wires to use with the high power coils? Seems like your wires are not a good fit for the coil.
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VaccaRabite |
Apr 25 2019, 09:04 AM
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#3
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En Garde! Group: Admin Posts: 13,465 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
Are there specified wires to use with the high power coils? Seems like your wires are not a good fit for the coil. As far as I know they are the leads that came with the coils (each plug has its own coil). The kit @McMark built has a coil near plug setup. The plug leads appear to be good quality 7mm silicone leads. The leads are too short for me to see the brand or maker. I suspect they are the leads that came with the coils. I'm waiting to hear from Mark B. before I order different leads (and If I do they will be custom Mangecore 8mm leads for EFI cars). Zach |
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