problem with spark plugs coming out of head
Diesel fuel sprayed around the spark plugs, let sit overnight and retry, if still tight reapply diesel. After the second try it has always worked for me. Just have to have patience in a case like this.
Are you blowing plugs out or do they just not want to un-thread?
There are a variety of repair kits for blown out plugs. Which one you use depends on how bad the hole is.
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