Posted by 4play on March 22, 2021 at 18:10:34 from (158.62.135.243):
In Reply to: Ford v 10 engine posted by 37 chief on March 22, 2021 at 14:40:14:
I've fixed a bunch of these through the years, more 5.4's than 6.8's and a few 4.6's. I don't think you can be proactive about blowing plugs unless you were willing to do inserts in all 10. The best inserts are expensive, and there is labor involved to install too. Blowing a plug on the road might be alarming but won't leave you stranded.
The broken manifold studs is not just a 6.8L problem, it happens to chevy, ford and dodge, honestly I've replaced more studs on chevy then dodge, then ford. The studs are just too small and maybe a little to do with inferior metals. I wouldn't worry about this problem, if it happens you will simply have a small exhaust leak/ticking noise mainly on cold startup that goes away or gets real light. Many people never fix these because it can be labor intensive to extract broken studs. If you have visual access to the manifolds, they usually break the rear studs first, you can either see missing manifold nuts and if leaking maybe some soot where it joins the head.
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