Cleaning Procedure
WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
Clean the fuel injector bores and clean the fuel injectors, if the fuel injectors will be re-installed. Refer to Fuel Injector and Fuel Injector Bore Cleaning and Inspection .