Actually, the system deactivates the valves and they remain closed. Any air/fuel that is "caught" in the cylinder is compressed and recompressed over and over, this creates a "spring" action that helps keep the pistons moving. Most likely there is also some factor of blow-by (air/fuel mix seapage past the rings) but probably very minimal. Since the computer shuts the spark off there is no ignition.Manris said:I know the cylinders don't shutoff, but they aren't supplied with the means to make power... they aren't supplied with fuel and a spark, but air does pass through them.
BTW - Welcome to the forum.