Gas Tank Vacuum Line

Standard neoprene fuel hose can be used for fuel pcv and eec systems on all vehicles where working pressures are under 50 psi or vacuum ratings are under 24 in.

Gas tank vacuum line. One 49 state tank and one ca emissions tank na 9. It will also have a fuel vapor separator and a charcoal canister. Fuel tank fuel line vacuum line carburetor fuel valve. 49 state unit has a fuel feed line from sender and a vented cap.

Fuel line is a petroleum resistant nitrile tube with a covering that resists weathering ozone. The gas then flows into the pipe to fill up the vacuum. Hg for 7 16 inch and smaller inside diameter sizes 10 in. This valve is normally closed but when the engine is shut off vapors from the fuel tank flow into the canister.

I received a p0456 small vacuum leak on my obdii reader and was feeling around for a. If fuel becomes trapped in the line your tank will then build pressure or vacuum until there is enough pressure to purge the vent which will cause gas and or odor to come from the vent line. In most cases air is sucked out of a pipe dipped in the tank creating a vacuum. This controls the flow of fuel vapors out of the evaporative emissions canister and is in line with the emissions canister as well.

An na 9 set up will have a sealed gas cap and the three vent lines in the tank body. This is part 1 of 3 of a fix to a 2010 jeep fuel tank vacuum line break. Hg for inch diameter hose. A return line is present on some models and will go through the sending unit.

It falls into the container from the pipe under the action of gravity. Once the engine starts the purge valve opens up and purges the fuel vapors into the engine. Many 150 buggies have 2 lines coming out of the fuel valve.