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Braved the ice ground, man is it slick out there today. Anyway, found some interesting things. First up, most of my glow plugs are junk, out of the 6 I could get to easily to read, only 2 passed. 3 read open circuit (no connection) and 1 read 0.00 ohms which I'm unsure if that's good or bad. This is after running the engine to get it closer to the tools. I read spec is under 1 ohm, new comes around 0.5-0.6 ohms. Also did a voltage drop test across the relay while under load (of whatever glow plugs are actually working) and I see 0.65v across the two big terminals. Most places I read says it should be under 0.5v so it's probably on it's way out. Battery voltage after running a short time was at 13v, with glow plugs on it dropped to just a tiny bit under 12v so the batteries seem healthy, but replacing the glow plugs will really tell the story. Since it's lacking maintenance so bad, I'm thinking I'll replace all 8 glow plugs, fair chance they are orig or only replaced once. I guess glow plugs, then retest the glow plug relay and the battery voltage drop while under load to see how things look at that point.
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