How does the carburetor work on a Keihin cvk-40?
The bottom chamber is open to atmospheric pressure from the airbox by the crescent shaped casting on the top of the venturi. When the vacuum in the top chamber rises sufficiently, the constant ambient pressure of the lower chamber, helps the diaphragm valve overcome the downward force of the diaphragm spring, and it rises from the venturi.
Where is the throttle cable on a CV carb?
The slide on a conventional carb is directly connected to the throttle cable. Twist the throttle grip and the slide is raised in the venturi. On a CV carb the throttle cable is connected to a butterfly valve that varies the volume through the venturi.
Is the cvk40 a bleed or constant vacuum carb?
They will be less expensive than ordering through your Kawasaki dealer and, in most cases they will be ‘in stock’. The CVK40 is technically a bleed type carb, with a variable venturi that’s controlled by constant velocity (CV). It’s also known as Constant Depression or Constant Vacuum. The 40 in the name represents a 40 mm venturi exit diameter.
What makes a CV carb a variable venturi carb?
Both the CV and conventional slide carbs are classified as variable venturi carbs. The slide on a conventional carb is directly connected to the throttle cable. Twist the throttle grip and the slide is raised in the venturi. On a CV carb the throttle cable is connected to a butterfly valve that varies the volume through the venturi.
Is the CARB vent tube in the air box?
To complicate this problem, I replaced the stock carb vent tube with the flimsier, smaller diameter rubber tube that even NOT kinked, did not vent properly! After completly removing the carb vent tube from the “Y” connector inside the air box the problem has been eliminated.
Do you need to clean the CARB vent tube?
You can see it here as #9 http://www.ktminfo.com/partscat/Parts.asp?Page=03600310&Cat=3208106&CatID=547 as part of the EPC system. The carb vents need to be kept clean in order to stay venty, and to keep your slides from getting all gummed up.
How does a vapor canister work in a car?
Once the vehicle is running and conditions are correct, the vapors are drawn into the engine to be burned. This process, which is referred to as “purging,” requires assistance from a device called the purge valve. Your car’s primary computer (often referred to as the powertrain control module) initiates the purge process by opening the purge valve.
How are carb vent lines sensitive to gas?
These carb are very sensitive to venting. We placed no filters on the lines as they do not breath (constantly suck) and as far as gas spilling in bottom of box we he did not see this as anymore of a problem than the stock vent lines on 03 spilling directly out bottom of box.