glowing plug wire?

[Alxsmt]

i was trying to find a small exhaust leak in the dark(narrowed it down to the headers) and i noticed one of my plug wires was glowing inside (with the spark) with higher rpms. they are new ac delco wires, mabye 7k on them, installed with new engine.. i dont notice it missing, but sometimes at idle it likes to run rough and die. still in the middle of tunning.

would you say its fine or go spend $40 on a new set of wires? or toss on one 3500 wire that has 24k on it for the time being(dont wanna spend extra right now if i dont have to).

[3400-95-Modified]

Toss a spare wire on it and see what happens... New or not it could be a faulty wire.

[whatever]

I would try a different wire. I've seen headers glow but never a plug wire.

Mark.

[Alxsmt]

ok. it does look kinda cool with the blue :P

thanks

[Alxsmt]

well swaped the wire out, same problem.. guess i gotta swap coils or maybe a plug

[1meanz]

take a video of that shit or something. is it glowing at the end where it connects to the coil packs, or where it goes onto the spark plug, or in between?

[Alxsmt]

lol i tried, its too dim to show up on video. its going from the coils to the sparkplug. all the way through the wire

[MidnightriderZ24]

could be a hairline crack in the insulator or boot. spray some water on it while its running, if it arc then def replace it. does it act up with the winter weather/rain?

[Alxsmt]

i swaped out coils today, instead of 1 wire glowing i got 2. both from the same coil i replaced.. no it wasnt new. i havnt checked the plugs yet.. i will try the water trick tho

weather doesnt affect it

[PCGUY112887]

Did you install glowing pimp-my-ride style plug wires without realizing it?