Great to hear about the four new plugs .
I bet it fires up very fast now, I know mine do and I should have not let it go so long , thats why I got stuck but hey its done and will see how long they last .
First time for me changing Glow plugs.

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A couple of Ford pickups F 150,250, 350 missed.
1983 240 D 256,000 miles ,auto, ac.