Y'all!

back story: My friend just got this '98 E300 turbo diesel about a month ago. A couple minor issues to start with but got those sorted out for the most part and all has been fairly well so far...
http://www.peachparts.com/shopforum/diesel-discussion/387614-98-e300-td-flashing-triangle-light.html

NOW: he was driving the other day and had some kind of catastrophic failure. Loud noise from the engine, smoke/steam/fumes under the hood, no power. Tow truck time.

went over yesterday to help him figure it out. pulled the intake manifold and saw the problem right away. Previous owner had JB welded one glow plug into its hole! JB welded glow plug had blown out. see pictures.

So, i'm getting together a plan to try to fix this. Gathering info from the interweb and soliciting advice and ideas from you all.

Thinking about using a time sert thread repair thingy. looks like the GP hole in the head is still mostly intact. very small amount of original tread left.

Question: looking at the 12mmX1.25X15mm thread repair. dose this size up with the GP for a om606??

i am personally least experienced with the om606. all advice and ideas are welcome. Thanks!

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Current fleet
2006 E320 CDI
1992 300D - 5speed manual swapped

former members
1984 300D "Blues Mobile"

1978 300CD "El Toro"