Fuel Pressure: Testing and Inspection
CHECK FUEL PRESSUREa. Check that the battery positive voltage is above 12 V.
b. Disconnect the negative (-) terminal cable from the battery.
c. Remove the fuel pressure pulsation damper from the RH delivery pipe.
d. Install the fuel pipe sub assembly No. 2 and SST (pressure gauge) to the delivery pipe with the 3 lower gaskets and SST (union bolt).
SST 09268 45014 (09268 41190, 90405 06167)
Torque: 39 N.m (400 kgf.cm, 29 ft.lbf)
e. Wipe off any splattered gasoline.
f. Reconnect the negative (-) terminal cable to the battery.
g. Connect the hand held tester (with CAN VIM) to the DLC3 (see step 1 (a) to (e)).
h. Measure the fuel pressure.
Fuel pressure: 304 to 343 kPa (3.1 to 3.5 kgf/sq.cm, 44 to 50 psi)
If pressure is high, replace the fuel pressure regulator.
If pressure is low, check the fuel hoses, fuel hose connections, fuel pump, fuel filter and fuel pressure regulator.
i. Disconnect the hand held tester from the DLC3.
j. Start the engine.
k. Measure the fuel pressure at idle.
Fuel pressure: 304 to 343 kPa (3.1 to 3.5 kgf/sq.cm, 44 to 50 psi)
l. Stop the engine.
m. Check that the fuel pressure remains as specified for 5 minutes after the engine has stopped.
Fuel pressure: 147 kPa (1.5 kgf/sq.cm, 21 psi) or more
If pressure is not as specified, check the fuel pump, pressure regulator and/or injectors.
n. After checking fuel pressure, disconnect the negative (-) terminal cable from the battery and carefully remove the SST to prevent gasoline from spilling.
SST 09268-45014
o. Reinstall the fuel pressure pulsation damper to the RH delivery pipe.
p. Reconnect the negative (-) terminal cable to the battery.
q. Check for fuel leaks.