Shaggy Sheep Driver (re the M14P):
Also, with those engines, if it's not run for more than a few days it's cowlings off and take out the drain plugs in the inlet pipes of the lower 3 cylinders. Oil can collect there and it won't come out by hand-pulling it through as the 'elbow' in those inlet pipes is below the level of the exhaust valves. So any oil stays there 'till start up, wherupon it gets sucked into the cylinder where it can cause a lock.
That's what I'd call (in software terms) a bad bug. (Microsoft would call it a "feature").
But I guess that's what you expect in a monopolistic design environment - The good ol' USSR. Market forces would have starved this "feature" out of the system.