How big of a vacuum can a Harley Voes open?
A Harley VOES will typically open between 4 and 8 lbs of vacuum. Slowly squeeze the handle of the mighty vac. Record how many pounds of vacuum it takes to open the switch. Your meter will beep/ring when the switch opens.
What does Voes stand for on a Harley Davidson?
These letters stand for Vacuum Operated Electric Switch. This Harley VOES switch has a very important function on a Harley-Davidson. It senses vacuum behind the butterfly of the carburetor and advances or retards the ignition timing accordingly. The Harley VOES switch remains closed until vacuum is introduced.
Where does the vacuum hose go on a Harley Davidson?
You said that the hose that is not blocked off goes to the base of the carb. I believe the hose would go to the nipple that you can see in the last picture, just below the top cap (black plastic). This is where the vacuum is created. If you’re talking about the nipple at the base of the carb this is the for the overflow of the float bowl.
How is the voes connected to the intake manifold?
The VOES is connected by a hose to a fitting on the intake manifold or carburetor. Inside the VOES is a diaphragm, a spring, and a set of electrical contacts.
A Harley VOES will typically open between 4 and 8 lbs of vacuum. Slowly squeeze the handle of the mighty vac. Record how many pounds of vacuum it takes to open the switch. Your meter will beep/ring when the switch opens.
What does Voes stand for in carb vacuum?
The VOES (Vacuum Operated Electrical Switch) is an electric switch activated by the carb vacuum. It’s specific purpose is to retard the ignition when the motor is running under high load (low vacuum) conditions. The VOES is a normally open switch. With low vacuum the switch is open.
What does the voes switch do on a Harley Davidson?
This Harley VOES switch has a very important function on a Harley-Davidson. It senses vacuum behind the butterfly of the carburetor and advances or retards the ignition timing accordingly. The Harley VOES switch remains closed until vacuum is introduced. When closed, the timing is retarded.
You said that the hose that is not blocked off goes to the base of the carb. I believe the hose would go to the nipple that you can see in the last picture, just below the top cap (black plastic). This is where the vacuum is created. If you’re talking about the nipple at the base of the carb this is the for the overflow of the float bowl.