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 can I adjust the voes on my Sportster?
The switches can be adjusted by removing the potted plug and adjusting the setscrew. You will need an accurate vacuum gauge and vacuum hand pump. We have been able to set the operating point as low as 2 inches and as high as 7 inches.
Where does the vacuum line go on a petcock?
Usually a cone shape. The stock petcock was vac. operated, and had a line going to the manifold or a “T”. See if there is a hose on your petcock. If not, that is probably why you have the plugged line. Your carb is a Keihn CV (constant velocity), a good carb for all around application. Your carb has had the fuel inlet elbow replaced.
What does the voes do on a Harley Davidson?
All Harley Davidson motorcycle carbureted models since the 1984 model year have used the VOES to improve throttle response, increase MPG, and meet EPA requirements for emissions. The VOES is a motorcycle part described as a vacuum ignition retard device. That is, under low vacuum conditions the switch is open and has no effect on ignition timing.
The switches can be adjusted by removing the potted plug and adjusting the setscrew. You will need an accurate vacuum gauge and vacuum hand pump. We have been able to set the operating point as low as 2 inches and as high as 7 inches.
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.
Is there a vac.hose on a petcock?
The piece with 2 wires and a vac. hose should be the VOES (vac. operated electrical system), but I’ve not seen one that is a box. Usually a cone shape. The stock petcock was vac. operated, and had a line going to the manifold or a “T”. See if there is a hose on your petcock. If not, that is probably why you have the plugged line.
What happens when the vacuum drops on a Harley?
When the vacuum drops again, the spring pushes the diaphragm back down, and the switch returns to OFF, its default position. There are only two positions, ON or OFF, and there are only two ignition maps (in the Harley box), retarded or advanced.