hey guy's well i own a 1997 vt commodore 3.8 litre it chuggs at certain revs and now has a noise coming from the internal, i replaced the plugs and i have put new ignition leads on and it is running like a shitter, only under load. once it starts to pick up it runs perfect but then once i flatten it it splutters and then stops doing it, any suggestions. there is no water in the oil or vice verser so it can't be getting into the plugs to do this. i'm stumped, any suggestions would be great
:bang::wax::bang: