2JZGTE coils

[Stott69]

Hi guys, Aristo has intermittently run rough, like on only 4 cylinders over the past week. Opened up the coil cover and found the wiring missing covers and insulation. Is this my problem or should I test the coils too?

[YeMs]

if they arent touching then possible not. what do the plugs look like?

[BlakeNZ]

dude, someone has butchered it! it is likely that there is a poor connection somewhere in that lot.