Why do you need an aircut valve on a motorcycle?
This article is by way of clarifying and justifying the procedure. The aircut valve’s job is to momentarily block the air side of the idle circuit (its air bleed, in other words) to make conditions for exhaust afterburn less likely. To eliminate popping on decel.
What does the air cut off valve do?
it cuts off air to the pilot circuit when on hard hard decel or any decel for that matter on other bikes and models its sometimes called and ENRICHENING valve its purpose is to detract from popping on decel which is a sever lean condition caused by hard decels…most any 4stroke will do it to some extent
What’s the purpose of the Keihin aircut valve?
This article is by way of clarifying and justifying the procedure. The aircut valve’s job is to momentarily block the air side of the idle circuit (its air bleed, in other words) to make conditions for exhaust afterburn less likely. To eliminate popping on decel. A more complete description is found in my article, Keihin Idle Circuits White Paper.
Where did the Honda aircut valve come from?
It’s possible I was the first to publicly address it (all the initial mentions on vintage Honda forums are mine), but Honda actually originated the procedure in a racing service bulletin for their 900F based road racing parts kits.
What does the air cutoff valve do on a bike?
it cuts off air to the pilot circuit when on hard hard decel or any decel for that matter. on other bikes and models its sometimes called and ENRICHENING valve. its purpose is to detract from popping on decel which is a sever lean condition caused by hard decels…most any 4stroke will do it to some extent.
What does the air cutoff valve on the carbs do?
The air cutoff valve is a simple but vital component of the carburetor system on GL1000s. It’s function is to eliminate backfiring on hard deceleration (throttle fully closed). Hard deceleration creates a high vacuum signal in the intake tract which activates the valve.
What happens if you eliminate the air cutoff valve?
Davek I respectfully to disagree with your comment that by eliminating the air cutoff valve would lead to a overly rich pilot circuit. To eliminate the air cutoff valve you would not only increase the pilot jet but also the needle would have to be recalibrated.
What does the air cutoff valve do on a GL1000?
The air cutoff valve is a simple but vital component of the carburetor system on GL1000s. Its function is to eliminate backfiring on hard deceleration (throttle fully closed). Hard deceleration creates a high vacuum signal in the intake tract which activates the valve.