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Lugging an engine causes a range of or can lead to other problems. Back in the day lugging an engine causes it to rattle as it wasnt turning fast enough to keep the layer of oil between the rods and journals. With the removal of lead from fuel you got preignition, ping and detonation to compound the issue.
With the above mentioned issues resolved as technology advances lugging an engine caused you to wipe the oil film from the compression side of the cylinder and caused it to wear in an egg shape.
Granted we have even better oil than 5 years ago and new coatings for cylinders and pistons this is still an issue. Honda is having several recalls for the v6 and vcm issues. the VCM is lugging the engine on too few cylinders causing excessive oil consumption. The solution is to upgrade or update the programming to not do that.
To help circumvent many of these issues this is why some races allow you to start from a roll.
Now due to the lack of a throttle plate of a diesel engine and the introduction of smoke maps this is the best way to operate one of them, within reason of course.
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