Where is the fuel line from the carburetor?
Here I have highlighted in yellow the fuel/air connection from the carburetor to the engine, outlined in blue the air supply from the intake to the carburetor, outlined in red the fuel line from the tank to the carburetor. Here I have highlighted in yellow the fuel shut-off valve for the gas tank. Here is another view with more parts labeled.
Are there two hoses that run from the carburetor?
It should have another, much larger, hose from the carburetor providing fuel/air to the engine. – Seminecis Sep 4 ’13 at 22:26 The upper hose that you found cut and zip tied is likely to be a vacuum line, rather than a fuel supply line.
Can a Honda CB750 have a vacuum leak?
• Do not mistake vacuum leaks for out of synch carbs. Never attempt to synch carbs without verifying that there are no vacuum leaks. The video below takes you for a test ride on an 81’ Honda CB750 with severe vacuum leaks in the carb holders and throttle shafts.
What causes a vacuum leak in a carb?
Throttle shaft seals can also cause vacuum leaks and are the most difficult to replace. The leak can be caused by either worn throttle shafts, bad seals, or both. Some carbs rely on the tight clearance between the throttle shaft and carb body to minimize air leaks.
Here I have highlighted in yellow the fuel/air connection from the carburetor to the engine, outlined in blue the air supply from the intake to the carburetor, outlined in red the fuel line from the tank to the carburetor. Here I have highlighted in yellow the fuel shut-off valve for the gas tank. Here is another view with more parts labeled.
What kind of carburetor does a Honda CB use?
A typical application of this design can be found on many Japanese four-cylinder engines manufactured from the 70s onwards, such as GS Suzuki’s, Honda CB’s, and Kawasaki Z series machines. A = adjuster between carbs one and two. B = adjuster between the banks (one and two and three and four). C = adjuster between carbs three and four.
It should have another, much larger, hose from the carburetor providing fuel/air to the engine. – Seminecis Sep 4 ’13 at 22:26 The upper hose that you found cut and zip tied is likely to be a vacuum line, rather than a fuel supply line.
Why is there no fuel in my carburetor?
If you can, try cleaning the fuel line out and replacing the fuel filter to make sure you’re getting fuel to the carburetor. Inspect the fuel pump for wear and loose or cracked hoses. If there is no vacuum in the hose, you’re carb won’t get any fuel. This is most likely caused by a crack in the vacuum fuel lines or a bad fuel pump.