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Arching across coil terminals
Question, yesterday when I was putting my 80 SC back together (frequency valve, and wiring issues) I started the car up and it ran well, not great but just ok. I was about to adjust the timing however I placed my hand NEAR the coil and I received a violent shock!
I waited until nightfall as another post suggested and looked for arching, I in fact have blue sparks on both of the positive and negative coil posts, across the boot. It's actually a pretty loud snapping noise as a result. So is this what happens when the coil fails? Or is it just a coil wire, in either case I have to order one or the other from our host, I just hate to keep throwing parts at this thing.
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2021 Model Y 2005 Cayenne Turbo 2012 Panamera 4S 1980 911 SC 1999 996 Cab |
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10-23-2005, 08:51 AM
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Join Date: Mar 2001
Location: Marysville Wa.
Posts: 22,482
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bad coil wire, bad plug connector causing the spark to take the path of least resistance (one of the coil terminals is grounded), dirt/moisture on the coil tower, could be a cracked coil snout, or internal corrosion in the snout too. and check the cap and rotor for cracks or burning.
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https://www.instagram.com/johnwalker8704 8009 103rd pl ne Marysville Wa 98270 206 637 4071 Last edited by john walker's workshop; 10-23-2005 at 10:09 AM.. |
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10-23-2005, 10:06 AM
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Ok, just checked. Coil wire is fried, the metal piece at the end is cracked and tarnished, as are the other plug wires as well for #5 and #3. Coil looks intact after removal, snout does not sppear to be cracked at all. Thank's for the advice on the "path of least resistance" I know nothing when it comes to electrical. I will pop over to the catalog section and order up some new wires. Thanks.
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2021 Model Y 2005 Cayenne Turbo 2012 Panamera 4S 1980 911 SC 1999 996 Cab |
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10-23-2005, 10:18 AM
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Join Date: Nov 2004
Location: Greater Metropolitan Nimrod, Oregun
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also the word is arcing
if you search on arching you won't find relevant posts check the female terminal on the coil carefully - stick an LED down there if you need to.
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"A man with his priorities so far out of whack doesn't deserve such a fine automobile." - Ferris Bueller's Day Off |
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10-23-2005, 12:28 PM
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Quote:
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2021 Model Y 2005 Cayenne Turbo 2012 Panamera 4S 1980 911 SC 1999 996 Cab Last edited by Scott R; 10-23-2005 at 01:57 PM.. |
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10-23-2005, 01:03 PM
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1985.5 Porsche 944 2.5L Supercharged 
911 SC
Panamera
