Mercedes W123 Glow Plug Test Technique

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Mercedes W123 Glow Plug Test Technique: crwdns2935265:00crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

Shown here is a bad glow plug. It did not glow at all despite 12v being directly applied. This was the main culprit in this particular car's rough cold starts.

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