Toyota 4-Runner 1985 Repair Manual page 213

FI-44
SST
EFI SYSTEM - Fuel System
FI0577
FlOO15
FlOO16
(g) Install a gasket, SST, another gasket and union bolt
to the delivery pipe as shown in the figure.
SST
09268-45011
(h)
Wipe off any splattered gasoline.
(i) Reconnect the battery cable.
(j) Short both terminals of the fuel pump check con-
nector with a wire.
(k) Turn on the ignition switch.
(I)
Measure the fuel pressure.
Fuel pressure:
2.3 - 2.7 kg/cm 2
(33 - 38 psi, 226 - 265 kPa)
If high pressure, replace the pressure regulator.
If low pressure, check the following parts.
• Fuel hoses and connection
• Fuel pump
• Fuel fi Iter
• Pressure regulator
(m) Remove the service wire from the service connector
(n) Start the engine.
(0)
Disconnect the vacuum sensing hose from the pres-
sure regulator and plug it off.
(p) Measure the fuel pressure at idling.
Fuel pressure:
2.3 - 2.7 kg/cm2
(33 - 38 psi, 226 - 265 kPa)
(q) Reconnect the vacuum sensing hose to the pressure
regulator.
(r) Measure the fuel pressure at idling.
Fuel pressure: 1.9 - 2.2 kg/cm
2
(27 - 31
psi,
186 - 216
kPa)
If not pressure, check the vacuum sensing hose and pres-
sure regulator.
(s) Stop the engine. Check that the fuel pressure remains
above 1.5 kg/cm2 (21 psi, 147 kPa) for 5 minutes
after the engine is turned off.
I f not with in specification, check the fuel pump, pressure
regulator and/or injectors.
(t) After checking fuel pressure, disconnect the battery
ground cable and carefully remove the SST to prevent
gasoline from splashing.
(u) Using new gaskets, reconnect the cold start injector
hose to the delivery pipe.
(v) Connect the wiring connector to the cold start
I,.
jector.
(w) Check for fuel leakage.