Emission Control System — Evaporative Emission Controls / Two-Way Valve [Without CATA Ex. KY]

6-100prose procedure

Left column two-way valve test applies to models With CATA and KY; right column applies to models Without CATA Except KY.

Evaporative Emission Controls — Two-Way Valve Test [With CATA and KY]

1
Remove the fuel filler cap.
2
Remove vapor line from the fuel tank and connect to T-fitting from vacuum gauge and vacuum pump as shown.
3
Slowly apply vacuum while watching the gauge. Vacuum should stabilize momentarily at 5 to 15 mmHg (0.2 to 0.6 in. Hg).
4
Move vacuum pump hose from vacuum to pressure fitting, and move vacuum gauge hose from vacuum to pressure side as shown.
5
Slowly pressurize the vapor line while watching the gauge. Pressure should stabilize at 10 to 35 mmHg (0.4 to 1.4 in. Hg).

1
Remove the fuel filler cap.
2
Remove the vapor line from the canister or frame, and connect to a T-fitting from the vacuum gauge and the vacuum pump as shown.
3
Slowly draw a vacuum while watching the gauge. Vacuum should stabilize at 15 to 30 mmHg (0.6 to 1.2 in. Hg).
4
Move vacuum pump hose from vacuum to pressure fitting, and move vacuum gauge hose from vacuum to pressure side as shown.
5
Slowly pressurize the vapor line while watching the gauge. Pressure should stabilize at 10 to 25 mmHg (0.4 to 1.0 in.Hg).