This will probably be a multi installment read, so get a cup of joe or whatever. Hopefully you will enjoy.
For about five years my generator engine would periodically produce black smoke, not grey, not white, black. That is usually a sign of incomplete combustion in a Diesel engine. Because our generators are oversized for most of how we use the coaches, the engine runs at partial load and has a tendency to build up carbon in the cylinders. The carbon build up can interfere with the valves s
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