I checked the connection at the starter but not the battery terminals initially. Sanded corrosion= start. Yeah totally overlooked that. Still trying to figure out why it's harder to start now since I installed the key. When I installed the offset in the direction I read to adjust for timing chain stretch, timing went from 5 degrees off to nine. So I installed it the other way and it went down to 1. But now it's harder to start. I'm going to adjust the injector pump timing this week. I'm assuming the injector pump would be too far advanced now, and that I would have to back it off because of the woodruff key and that will make starting easier. correct?

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1981 300D 205,000 mi.