I had a seriously shit day today and now I have no idea how to fix it and it just so happens this forum might be my last hope I was changing my spark plugs today and I was on my last plug of the reinstall..... well as I was loosening it up I heard a pop and immediately stopped and I looked inside and found that my plug had broke off in the heads. The threaded metal part is still stuck and the porcelain came clean out... Plz I need serious advice and help thanks....