provide more air or less fuel........... the year ,make and model of vehicle would be needed to be more specific about things like adjustments, O2 and temp sensors, air filters, injector issues , fuel pump pressure, return line restrictions, etc.
Find out why it's running rich, fuel pressure regulator, air filter, etc....
A flight engine stops running after it has been stopped by a pilot.
Yes.
no as long as the engine is running the pump needss to remain on
Too rich and you will get black smoke from exhaust. You can also read the spark plugs. way too rich and the engine will bog down or flood out in extreme situations. If it's running too lean, the rpms will get erratic.
turn the engine off
Engine is running rich
An engine runs by the combustion of a mixture of oxygen and gasoline. If this mix has too much oxygen, it is said to run lean. When the mixture has too much gasoline in relation to oxygen, it is running rich.
We need to know the year, make and engine to help you.
Engine coolant temp running 220 degree F
To stop a 1991 VW GTI from running rich, start by checking the fuel pressure regulator, as a malfunction can lead to excessive fuel delivery. Inspect the airflow meter and ensure it's functioning correctly, as improper airflow readings can cause the engine to receive too much fuel. Additionally, examine the spark plugs for fouling, as worn or dirty plugs can indicate rich running conditions. Finally, consider checking or replacing the engine's temperature sensor, as incorrect temperature readings can affect fuel mixture.
A bad Mass airflow sensor - on any GM vehicle that is equipped with one - will DEFINITELY stop the engine from running.