Narrative:

Lost left engine power. Smoke from left engine nacelle. No loss of oil temp or pressure. No loss of cht or egt. Reduced power. Landed uneventfully. Tower cleared me for immediate landing. Shut aircraft down after taxi to ramp. Preliminarily [diagnosis] seems [to indicate] the turbocharger stopped working.

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Original NASA ASRS Text

Title: C340A pilot reported loss of engine power accompanied by smoke from the left engine nacelle. Pilot landed at nearest suitable airport.

Narrative: Lost left engine power. Smoke from left engine nacelle. No loss of oil temp or pressure. No loss of CHT or EGT. Reduced power. Landed uneventfully. Tower cleared me for immediate landing. Shut aircraft down after taxi to ramp. Preliminarily [diagnosis] seems [to indicate] the turbocharger stopped working.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.