If that glow plug was indeed shorted, what kind of damage did it do? Attaching the induction ammeter to the battery cable takes 1/2 a second and the test takes another 3 seconds. No need to take resistance of 5 glow plugs, go through a glow cycle, take the resistance of 5 glow plugs again again. Wouldn't you agree that's easier.
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Originally Posted by DieselAddict
I've had a plug that was short-circuited, so they do exist. The exact resistance that you measure isn't important. If you glow plug has a much higher resistance right after glowing than when it's cold, you know it works. End of story. There's no need to attach anything to your battery or add up any amperage.
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