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← ScienceWhich behavior manifests when a diesel engine's turbocharger cycles erratically due to wastegate malfunction?
A)Unstable combustion from lean-burn events
B)Increased NOx emissions decreased economy✓
C)Premature catalytic converter failure
D)Cylinder knock from excessive compression
💡 Explanation
When a malfunctioning wastegate causes erratic cycling because the variable geometry no longer responds correctly fluctuating air intake occurs affecting combustion efficiency reducing economy while raising emissions. Therefore unstable operation results that manifest as increased NOx and decreased economy rather than other issues from unrelated conditions.
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