The (clear) fuel intake line runs from the top of the carburetor (straight nipple) and goes to the short post on the back of the primer bulb. The return line (blue) comes from the long post on the back of the primer bulb and goes into the bottom of the fuel tank.
What size is GM fuel line?
3/8 inches
The OTC 7629 fits GM vehicles with 3/8 inches fuel lines.
Can you replace fuel lines?
Replacing the fuel hose on your vehicle is going to take time and patience, and it could require getting underneath the car. It’s also going to take the right tools for the job. You’ll also want to buy fuel hose clamps, the metal rings that tighten to hold the hoses in place and prevent leaks.
What are the symptoms of having air in the fuel line?
Air bubbles in a fuel line can lead to stalling, hiccuping or refusal to start. Keep your fuel lines free of air to help keep your car running smoothly.
What line pipes are connect the engine to the fuel tank?
The fuel line typically consists of rigid metal pipes, with flexible rubber or plastic hoses running from the pipes to the tank and the fuel pump , and from the pump to the carburettor .
What size is the gas line in a car?
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 |
Can you use rubber hose for gas line?
Standard rubber vacuum or heater hose should never be used in fuel applications. The hose will deteriorate from the inside out and can plug fuel filters and carburetors with rubber debris, long before it springs an external leak.
How do you bleed air from a fuel line?
To purge air from the low-pressure side of the fuel system, open fuel-line unions and bleed ports downstream of the pump, one at a time, beginning with those closest to the pump, and continue pumping until fuel, and not air, runs out.
