You’ve just discovered there’s water seeping out the top of a head stud & to make life worse the stud has come apart from the base thread, so what are the options – remove the head & tap a thread into the top deck of the block, not the best option – expensive & time consuming, next option is to access the remaining thread via a welsh plug ( freeze plug) you could try & grind flat to drill and tap out the old thread but this again is time consuming & can be expensive & unfortunately some will try re welding – now that’s a real mess.
Don’t despair there is hope with a fix I have done on my own engine (XJ6 S2) & others I call “The sandwich bolt”, this method works when you just need the problem fixed & back driving with a minimum of fuss & expense. Here’s a step by step guide with graphics to repair the problem without removing the cyl/ head....Download the PDF file for full guide ......
Don’t despair there is hope with a fix I have done on my own engine (XJ6 S2) & others I call “The sandwich bolt”, this method works when you just need the problem fixed & back driving with a minimum of fuss & expense. Here’s a step by step guide with graphics to repair the problem without removing the cyl/ head....Download the PDF file for full guide ......