Hey I'm glad to hear my technique works. It works for me like a charm, so I figured someone else might benefit from it. I found out they used the same technique at the dealer when the glow plugs qouldnt come out. Do you use a 3/8 impact or 1/2?

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Only diesels in this driveway.
2005 E320 CDI 243k Black/Black
2008 Chevy 3500HD Duramax 340k
2004 Chevy 2500HD Duramax 220k