Quote:
Originally Posted by MBgrinder
my 79 SD has the pencil type plugs. Do your glow plugs have individual wires for each plug??
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That right? Didn't know the 79 had the newer plugs..........
If so, then the one plug won't cause the others to go out. You can do a resistance check of the plugs by pulling the connector at the glow plug relay. Check resistance to ground on the lowest scale on the meter.
You're looking for .6-1.2 ohms or so. One of them is probably open (infinite resistance).