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GustavSpanjor t1_iwfm9is wrote

Reply to comment by Skeetronic in How an engine works. by ooMEAToo

Exhaust should be open on an upstroke so that the exhausts get pushed out. Now both exhaust and fuel intake is open on a downstroke.

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shikuto t1_iwfsmbv wrote

>Now both exhaust and fuel intake is open on a downstroke.

No they’re not… Watch it again. Blue (intake) is open on a down stroke, red (exhaust) is open on the up stroke.

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