watching your engine in total darkness
Thread Starter
Drifting
Joined: Sep 2003
Posts: 1,483
Likes: 4
From: middle TN
watching your engine in total darkness
What's normal as far as faint electrical discharge seen during idle? Trying to see if anything's arcing from the opti in my 94 (not that you can even see the opti it's so far under there).
I can see 2 or 3 faint traces of blue around the plug wires on each side (not necessarily confined to the boot area), as well as faint blue on each side of the coil. FWIW, new coil and plug wires carefully routed to avoid touching metal as much as possible.
I can see 2 or 3 faint traces of blue around the plug wires on each side (not necessarily confined to the boot area), as well as faint blue on each side of the coil. FWIW, new coil and plug wires carefully routed to avoid touching metal as much as possible.
Burning Brakes
Joined: Dec 2003
Posts: 1,183
Likes: 1
From: MidOhio
Sounds like "corona" discharge. Typical of any high voltage conductor. Usually looks like light blue fog; not a cause for concern. An actual HV leak or short would be very bright and confined, jagged type arc usually accompanied by audible snapping sound. 
Team Owner
Joined: Feb 2005
Posts: 20,111
Likes: 1
From: My redneck of the woods louisiana
Originally Posted by tonymax2
An actual HV leak or short would be very bright and confined, jagged type arc usually accompanied by audible snapping sound.
think of the noise a welder makes
Safety Car
Joined: Oct 2002
Posts: 3,991
Likes: 0
From: Phoenix AZ
Originally Posted by tonymax2
Sounds like "corona" discharge. Typical of any high voltage conductor. Usually looks like light blue fog; not a cause for concern. An actual HV leak or short would be very bright and confined, jagged type arc usually accompanied by audible snapping sound.
