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Gary, GMC Technician
Category: GM
Satisfied Customers: 17022
Experience:  15 years gm master tech/15 years ASE master tech
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GM camaro z28: my 1994 LT1 z28 idles rough and I can see sparks

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my 1994 LT1 z28 idles rough and I can see sparks coming from spark plug type wire on the coil. Cleaned up everything and checked insulation. still sparks. Is coil bad or coil wire?

Welcome to Justanswer ! my name is XXXXX XXXXX i will do my best to assist you with this problem

is the spark coming out of the wire boot itself or from the coil tower the plug wire connects too ?

try to look really good at it

most of the time a new coil and coil wire will fix it right up

the coils will get a hair line crack on them

but if you have a bad coil wire with high resistance the spark will jump out from the boot



Customer: replied 4 years ago.

it seems to be coming from the area were the boot butts up against the coil.

ok change the coil wire if it still jumps change the coil
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