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February 24, 2021 Service bulletin

Pitstop/technical operations - smoke machine not to be used for emissions testing with HEV/PHEV models

Kia technical service bulletin PS686 for 2017-2021 Kia Niro, 2011-2020 Kia Optima Hybrid and 2021 Kia Sorento Hybrid and others.

Bulletin number
PS686
Component
Engine and engine cooling
Summary
PITSTOP/TECHNICAL OPERATIONS - SMOKE MACHINE NOT TO BE USED FOR EMISSIONS TESTING WITH HEV/PHEV MODELS - This Pitstop provides information to properly test the evaporative emissions system in all Kia 2011MY~ Hybrid (HEV) and Plug-In Hybrid (PHEV) model vehicles. A smoke machine should NEVER be used when testing the evaporative system in a HEV/PHEV model vehicle.

Owners of these vehicles have filed 259 complaints in the engine category.

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