Before and after glow plug replacement, cold start of a 6.5 GM Turbo Diesel. Original glowplugs were almost all dead and turned out to be a mishmash or several models installed by previous owner. First part of video is a cold start with my barely functional glowplug system, second part is with 8 new AC Delco 60G glowplugs installed but still utilzing the factory glow cycle, and the last part of the video shows the truck cold starting with a manual glowplug override installed, yielding a long glow plug cycle.
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