Why do carburetors get cold?
Carburetor icing is caused by the temperature drop in the carburetor, as an effect of fuel vaporization, and the temperature drop associated with the pressure drop in the venturi. If the temperature drops below freezing, water vapor will freeze onto the throttle valve, and other internal surfaces of the carburetor.
What causes a carburetor to stall at the base?
Stalling can also be caused by air and vacuum leaks in the carburetor itself (leaky gaskets and seals) between the carburetor base plate and intake manifold (bad base gasket), or in any of the vacuum hoses that connect to the carburetor or intake manifold.
What should I soak my Marvel Schebler carburetor in?
Place the two castings in a gallon of carburetor cleaner and allow to soak. If the carb hasn’t been cleaned in years you may want to soak it for a couple of days. This carb was cleaned recently but wasn’t idling right.
What causes a carburetor to flood and not start?
The carburetor may flood if dirt enters the needle valve and prevents it from closing. With no way to shut off the flow of fuel, the bowl overflows and spills fuel into the carburetor throat or out the bowl vents. A flooded engine may not start because the plugs are wet with fuel.
What happens when a carburetor is clean and working properly?
When a carburetor is clean and is working properly, the engine should start easily (hot or cold), idle smoothly, and accelerate without stumbling. The engine should get normal fuel economy and emissions should be within limits for the year of the vehicle.
Stalling can also be caused by air and vacuum leaks in the carburetor itself (leaky gaskets and seals) between the carburetor base plate and intake manifold (bad base gasket), or in any of the vacuum hoses that connect to the carburetor or intake manifold.
What kind of idle jets do GL1100 carbs have?
“GL1100 carbs had two different types of idle jets. The ’80 and ’81 carbs have the idle jets pressed into the carb bodies while the ’82 and ’83 carbs have removable idle jets. Do NOT try to remove the pressed in idle jets!!! They must be cleaned in place.”
Place the two castings in a gallon of carburetor cleaner and allow to soak. If the carb hasn’t been cleaned in years you may want to soak it for a couple of days. This carb was cleaned recently but wasn’t idling right.
The carburetor may flood if dirt enters the needle valve and prevents it from closing. With no way to shut off the flow of fuel, the bowl overflows and spills fuel into the carburetor throat or out the bowl vents. A flooded engine may not start because the plugs are wet with fuel.