Buick can't start after cleaning the nozzle and throttle.

The smell of gasoline in the exhaust gas is obviously caused by insufficient combustion, so it is meaningful for you to clean the throttle and nozzle, but at the same time, you should check whether the ignition energy is sufficient and the ignition time is accurate.

As for the failure to start after cleaning the throttle and injector, it is also possible that the treatment method is to replace the injector. However, it does not rule out that you accidentally hit other parts when removing the fuel injector and throttle valve, so whether the fuel injector should be replaced needs detailed inspection.

—— Beijing Benz Automobile Service Center