Quote:
Originally Posted by funola
Why is the engine block not a good ground? It is where the glow plugs are grounded so it better be a good ground.
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Good question. I tried using the block when I measured mine and got strange readings.
When I asked for advice here, I was told that only reliable ground was the negative cable. By several respondents.
When using a multimeter or test light on other cars I have always used the engine, or something attached to it, as a ground.