The choke mechanism on your Honda GX160 engine is responsible for providing an enriched fuel mixture to the engine when it is first started. When the engine is cold, the choke closes off the air intake, which restricts the amount of air that enters the engine. This creates a richer fuel mixture, which makes the engine easier to start.
However, if the choke mechanism is dirty or damaged, it may not be able to close off the air intake completely. This can result in a lean fuel mixture, which can cause the engine to stall when you back off the choke.
To fix this problem, you will need to clean the choke mechanism. You can do this by removing the air filter and then spraying the choke mechanism with a carburetor cleaner. Once you have cleaned the choke mechanism, reattach the air filter and start the engine. If the engine still stalls when you back off the choke, you may need to replace the choke mechanism.
Fuel supply issue
If the choke mechanism is clean and in good working order, the next thing you should check is the fuel supply. Make sure that the fuel tank is full and that the fuel line is clear of any obstructions. You should also check the fuel filter to make sure that it is clean.
If the fuel supply is adequate, the problem may be with the carburetor. The carburetor is responsible for mixing the fuel with air and delivering it to the engine. If the carburetor is dirty or damaged, it may not be able to deliver the correct amount of fuel to the engine. This can cause the engine to stall when you back off the choke.
To fix this problem, you will need to clean the carburetor. You can do this by removing the carburetor from the engine and then spraying it with a carburetor cleaner. Once you have cleaned the carburetor, reinstall it and start the engine. If the engine still stalls when you back off the choke, you may need to replace the carburetor.
