VY V6 Ecotec Misfire

[Deegan_ vy]

Hey all so my v6 vy had a miss and I’ve replaced the leads,Plugs,coil packs and the module the packs sit on but after installing the module it had come right then couple days later miss has come back and took it to get scanned multiple times and they couldn’t pick anything up anyone know what the problem may be I’m suspecting head gaskets but have found no water in the oil?

 

[krusing]

Vac leak, (Smoke Test will locate this)
Being a 2004,
Possibly LIM Gaskets may need replacing,

Are you loosing water/coolant,
and its not leaking it ?

 

[Deegan_ vy]

Vac leak, (Smoke Test will locate this)
Being a 2004,
Possibly LIM Gaskets may need replacing,

Are you loosing water/coolant,
and its not leaking it ?

Not that I can see, it’s just been sitting after I’ve got a ss and wanna use the old v6 for some trips just wanna get the miss sorted

 

[Deegan_ vy]

Not that I can see, it’s just been sitting after I’ve got a ss and wanna use the old v6 for some trips just wanna get the miss sorted

It is only really missing under load or when revved up when idle and kept at a certain rpm it’s fine

 

[Immortality]

Could be a fuel problem too. Change the fuel filter and run some injector cleaner.

 

[vr304]

You didn’t go buying cheap plugs, leads coil packs etc off ebay did you?
Could well still be your issue if so