So you are saying the glow plug relay isn't putting out 12v to the plug bus now, or that the plugs don't light when connected directly to the battery positive even though all 6 of them tested good in the recent past? It would be unusual for all 6 to spontaneously burn out.
What brand are the plugs and do they pass the ohmmeter test (shows continuity rather than open circuit between plug terminal and battery negative)?
How are your engine grounds? Is the cranking speed good?
What injection timing setting did you go with?
Sounds like you are close to the finish line.
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86 745 D24T/ZF 345k lifted 2.5"
83 764 D24T/M46 155k
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