How an engine works.Wayed96 t1_iwgckmt wrote
Reply to comment by zebrawithnostripes in How an engine works. by ooMEAToo
>Blue valve opens, gas gets injected, piston is pushed back up, gas compresses, spark, boom
"Gas" is not injected. Air is sucked in because the piston moves down. Fuel could be injected either directly or just before the blue valve.
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