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Originally Posted by Hatterasguy
But testing with the meter doesn't always seem to work. I had glow plugs that tested fine yet failed to actually get very hot when hooked to a battery.
WARNING if you do this hold the glow plug with a pair of pliers. If not you will burn yourself pretty bad.
So far I am 2/2 I have two MB diesels and both needed a complete set of glow plugs.
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This is an amp meter so it supplies the power to the glow plug and measures the amount of current or amps that the glow plug takes. I leave the glow plugs in the engine when I do this test. No point in removing a good glow plug
eg. If you wanted to power up your headlight it would do it just fine and tell you how many amps it took to do it.
This meter is supposed to be used to for testing the output of your alternator.