Hard & rough cold-starting in 1982 300D-T
I'm hoping someone can readily identify this issue before I have to break down and shell out for a mechanic due to the urgency of getting it resolved... My ASTM-certified-biodiesel powered 1982 W123 300D-T is having issues with starting up first thing in the morning. It has gotten bad over the past couple of weeks to the point where it won't always fire up on the first try or two. When it does catch, it "chugs" really hard, smokes light-to-medium gray like a chimney and generally sounds grumpy for a bit before smoothing out.
