Honda 2004 Odyssey Service Manual page 609

EVAP System
Fuel Tank Vapor Control Valve Test (cont'd)
9. Connect a second vacuum pump to the fuel tank
vapor signal tube (A).
A973X-041-
XXXXX
10. Apply vacuum (1 pump) to the fuel tank vapor
signal tube (A), then check the vacuum on the
pump in step 8.
• If the vacuum holds, replace the fuel tank vapor
control valve (see page 11-301).
• If the vacuum is released, the fuel tank vapor
control valve is OK. Go to step 11.
11-300
A
11. Fill the fuel tank with fuel, then check for fuel in the
EVAP two way valve (A) and fuel tank vapor
recirculation hose (B).
NOTE: At either location, tiny droplets of fuel are
normal.
• If fuel runs out of the hoses at either location,
replace the fuel tank vapor control valve.
• If fuel does not run out of the hoses at the fuel
tank vapor control system is normal.
Check for fuel
running out
12. Disconnect the fuel tank vapor control quick
disconnect from the EVAP canister, then plug the
port on the canister. Reapply vacuum (80 pumps).
• If the vacuum holds, replace the fuel tank vapor
control valve (see page 11-301).
• If the vacuum does not hold, inspect the EVAP
canister, vent shut valve O-ring. If the O-ring is
OK, replace the EVAP canister, and repeat the
valve test.
A
B
Check for
fuel running
out