You meant - awful knocking combustion in the first, main animation?
I never catches any real bug is those great posts, but this one, especially as first animation on the page - weird.
replyYou might be misreading the animation. It's a direct injection engine, the thing that happens during the compression stroke is fuel injection. Ignition happens a few degrees before TDC, which is realistic.
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replyOne of the rare situations where someone wants a bit of retard?
replyThat is often more advisable as opposed to doing it fully.
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