- What are the two hoses on a carburetor?
- What is the hose on the bottom of a carburetor?
- Where do the carburetor hoses go?
- What do carburetor vacuum lines do?
- Why is gas pouring out of the carb overflow?
- Why is my carburetor spitting out gas?
- What is a carburetor overflow?
- How do you seal threaded fuel lines?
- What size fuel line should I use?
- Does a carburetor need a vacuum?
- Can I plug my vacuum advance?
- Can you drive without a vacuum line?
What are the two hoses on a carburetor?
The two hoses circled in red are vent/over flow hoses. Should not have any plugs in them. They basically both route between the two carbs, hanging down. Each carb has a vacuum nipple.
What is the hose on the bottom of a carburetor?
Some carbs do not have a drain screw. They have a hose attached to bottom of carb. This has a seal in the end to stop FUEL coming out. It is only used for carb servicing/draining.
Where do the carburetor hoses go?
They are on the left side rear of the carb. Attach a hose to each one and run them either to the upper airbox area underneath the seat, or down below the carbs and to the rear of the engine. Like you said the petcock has two tubes; one is a vacuum and the other is the fuel feed to the carbs.
What do carburetor vacuum lines do?
Vacuum is caused by the engine “inhaling” the fuel/air mixture when it is running. The intake manifold is between the carburetor, or air box (fuel injected), and the engine. Manifold vacuum is what the vacuum lines are connected to the manifold for. ... These help keep your engine operating at peak efficiency.
Why is gas pouring out of the carb overflow?
One of the more common questions we get concerns either the overwhelming smell of gas coming from the carburetor or fuel leaking out of the bowl or overflow. Both conditions are typically caused by a stuck or worn float needle valve. ... Another common cause is the use of fuel containing any Ethanol.
Why is my carburetor spitting out gas?
If it's spitting gas out the horn of the carb, it's a timing issue. This timing issue could be way too much timing, way too little timing, or most likely ... plug wires on wrong, so they're firing at the wrong time.
What is a carburetor overflow?
Why is my carburetor overflowing with fuel? ... It means that the needle valve in the fuel bowel is stuck in the open position. Usually the gasoline fills the carburetor bowl up to a certain level and then the carburetor float will lift the needle and close the valve so no more fuel will come in.
How do you seal threaded fuel lines?
Liquid or paste type sealant won't clog. For gasoline, regular old gasoline resistant Aviation Form-a-gasket Number 3 is the best option. Another product also offered by Permatex is the High Temperature Thread Sealant.
What size fuel line should I use?
Recommended Size, Based on Horsepower
|Recommended Fuel Line Size (from the tank to the pump)|
|Engine Output||Size (inches)||Size (AN)|
|350 hp or less||5/16 in.||-5|
|350-450 hp||3/8 in.||-6|
|450-650 hp||1/2 in.||-8|
Does a carburetor need a vacuum?
A carburetor relies on the vacuum created by the engine to draw air and fuel into the cylinders. ... This creates the vacuum required to keep the engine running. To get an idea of how a venturi works, picture a river flowing normally.
Can I plug my vacuum advance?
You want to plug the line to the vacuum advance when setting the timing. After setting the timing, hook the vacuum line back up and adjust your idle speed if necessary. When checking you mechanical (centrifugal) advance, the vacuum line must be plugged as well.
Can you drive without a vacuum line?
No - each any every part of your engine is important for the correct running and function. If you have a broken vacuum hose, something will not be working properly. It may be emissions, efficiency, or even the braking system.