VE Commodore Rough idol when cold

[vtv8guy]

Friend has a VE commodore '08' and when first starts it runs really rough. Once she heats up she runs fine if you switch off then back on. But where im lost is something is causing an error for cyl 1, 3, 5 (someone hooked comp upto it) What would cause that ? from what im reading there is soooo many sensors lol. Just trying to help save her some money and see if anyone can shed some light on this Can an oxygen sensor cause this at all ? She had plugs replaced thinking that was the issue, but same thing happening.

[myberlina]

That is a strange one. Honestly have no idea myself (i'm not a mechanic).

But is it possible that there is a blockage on the fuel rail on that side of the motor maybe?

Alternatively there could be a bit of water corrosion in the wiring loom that services those injectors perhaps?

Just a few random ideas.

[Potta9]

Have you checked the vacuum lines