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LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Is it normal to see sparks under hood when dark?

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Old May 1, 2009 | 10:58 PM
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playa7970's Avatar
playa7970
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From: Atlanta,GA
Is it normal to see sparks under hood when dark?
just curious because i did this tonight for the hell of it and noticed light sparks on both sides of my engine which would explains why it was running rough and the throttle pop i think?
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Old May 1, 2009 | 11:09 PM
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spike30th
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yeah thats not good.Sounds like your plug wires are arching.Time for some new spark plug wires.This will deff make your car run rough.
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Old May 1, 2009 | 11:22 PM
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playa7970
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damn that sucks these wires are pretty new though about 6 months MSD 8.5 Super Conductor wire, i mean im sure i pushed it in all the way what else can cause this?
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Old May 1, 2009 | 11:26 PM
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Angelis83LT
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From: MN
Sparks will be the plug wires. It has nothing to do with how far you push them on. the arc is going from the wire itself to a ground. generally meaning a burnt through wire or the like.
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Old May 1, 2009 | 11:37 PM
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MikeGyver
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From: Orem, UT
You might not need wires.
You might have a cracked spark plug insulator or something. Find out exactly where the spark is coming from before you get anything.
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Old May 2, 2009 | 07:26 PM
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JooneJune
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And you'll get ZAPPED if the car is on any your checking it... Dont ask how i know...
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Old May 2, 2009 | 08:33 PM
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SS44Camaro
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Originally Posted by JooneJune
And you'll get ZAPPED if the car is on any your checking it... Dont ask how i know...
LOL thats awesome!!!
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Old May 2, 2009 | 08:36 PM
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MTBSully
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arcing plug wires for sure
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Old May 3, 2009 | 01:39 PM
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BCdawg57
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From: Carroll, Oh
This happens on my MSD wires also. Its not a spark but more like a glow. Ive touched them and they do not shock me. at all. My car also runs fine.
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Old May 3, 2009 | 09:36 PM
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Dave Morton
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usually when I see a spark or glow from an electrical wire, I try to avoid touching it
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Old May 3, 2009 | 10:38 PM
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user 647483
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Originally Posted by Dave Morton
usually when I see a spark or glow from an electrical wire, I try to avoid touching it
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