Thanks "waynebatt" for the tips on uploading photos, perhaps it is easier to ask my teenager kids to do it for me instead. As to the "matallic clicking noises", I googled "engine pinging'" and it described the noises/situations exactly to a T. Since I am using the "suggested" grade of 98 petrol and the engine is not running "hot", therefore the only possibility is the ERG (exhuast gas recirculation)..but then Holden insist it is "normal" to have such noises, they aren't going to do anything about it. I will first try to go back the original 91 petrol as the factory used, then the other option is ask the dealer workshop to check the ERG. If all fail, then I will take the ute to a specialised tunning workshop to "retune" the engine at my own expenses. So much for the Holden Customer Cares, really should be "Lack of Customer Cares"...