Misfire without any engine codes

[SgtMarshal]

I started noticing that my car has a multiple random misfire. The only time I can say it does it consistently is when the car starts. After that it only does it 3/4 times per two hours of driving. My plugs are about 2 years old, new wires, I've had an intercooler installed for about 3 months and have been working bugs out ever since.

When it does misfire it only lasts for a few seconds.

 

[Fivefingerdeathpunch]

Modded 3800 are known to misfire at random, very common at idle.

Changing the plugs could help but it might not.

 

[stealthee]

Mine even sounds like it misfires at idle occasionally, and I wouldn't consider it modded per say. It runs great though.

 

[blueguy]

Copper core plugs don't last; and after modded their life is exponentially decreased.

Just get new plugs, they're like $12~

 

[SgtMarshal]

I have iridium plugs installed now