Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.
You have the right plugs and gap. If you're not burning oil you're plugs are fouling because of the extra fuel in the inlet air. In days past I've used a hotter plug to prevent fouling-the extra heat burns off the carbon-like a BP5EFS. It's sort of a desperate measure but it might get you running.Yeah these ones ...BP6EFS it could be possible it's running Rich coz of the extra fuel in oil?