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post #1 of 3 Old 12-26-2009, 10:17 AM Thread Starter
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testing glow plugs question

Hi. I've read you can test your glow plugs with just a test light on the valve cover electrical connection but can someone please remind me exactly where to attach the test light?... 12v or ground? I'm at a hotel and don't have a volt meter but I do have a test light. My gpr works fine. Any help would be great. Thank you.

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post #2 of 3 Old 12-26-2009, 10:19 AM
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Originally Posted by The assassin Blevins View Post
Hi. I've read you can test your glow plugs with just a test light on the valve cover electrical connection but can someone please remind me exactly where to attach the test light?... 12v or ground? I'm at a hotel and don't have a volt meter but I do have a test light. Any help would be great. Thank you.
Why are you wanting to test them? If you think they are going bad, test the GPR first. But you need a volt meter.

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post #3 of 3 Old 12-26-2009, 01:05 PM
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Are you trying to test the glow plugs at the UVCH connector in the gasket with the valley harness pulled out? What you will want to do then is connect the gator clip/wire to the (+) of the battery, and touch the probe of the light to the pin in the connector. Bad thing is though, if a wire shorted to a rocker, etc, it will still light the tester.

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