Acura 3.5 RL Manual page 461

Fuel Tank Vapor Control Valve Test ('00-'04 model)
Float Test
1. Make sure the fuel tank is less than half full.
2. Remove the fuel fill cap to relieve the fuel tank pres-
sure, then reinstall the cap.
3. Remove the fuel hose joint protector. Disconnect
the fuel tank vapor recirculation tube, and connect a
vacuum pump to the vapor recirculation tube.
FUEL TANK VAPOR
RECIRCULATION
TUBE
4. Plug the pipe.
5. Apply vacuum to the fuel tank vapor recirculation
tube.
• If the vacuum holds, replace the Fuel Tank Vapor
Control valve (see page 11-204).
• If the vacuum does not hold, the float is OK.
PIPE
VACUUM PUMP/
GAUGE, 0 - 30 in.Hg
A973X - 041 -
XXXXX
Valve Test
1. Make sure the fuel tank is less than half full.
2. Remove the fuel fill cap.
3. Remove the fuel hose joint pretector. Disconnect
the fuel tank vapor signal tube.
FUEL TANK VAPOR
SIGNAL
TUBE
4. Disconnect the vacuum hose from the EVAP canis-
ter, and then plug the port with cap.
CAP
5. Disconnect the vacuum hose from the EVAP canis-
ter vent shut valve, and connect a vacuum pump to
the vacuum hose.
6. Pump the vacuum pump 80 times.
• If the vacuum holds, go to step 7.
• If the vacuum does not hold, go to step 9.
EVAP
CANISTER
VENT SHUT
VALVE
VACUUM
PUMP/GAUGE,
0 - 30 in.Hg
A973X - 041 - XXXXX